What is Dialect
A dialect refers to a branch of a language. Within this branch, different terms are used for different things. Dialects are usually formed around particular regions. However, they may also be used within certain groups of people.
For example, in The Odisha, there are particular dialects in the Western and Southern regions. Within that Southern dialect, however, there may be subgroups who speak yet another dialect. Foods are the most common terms to change within a dialect. What one dialect might call Saaga, another might call Tuna or Tarakari.
Dialect vs. Accent
Dialect and accent are two different aspects of language. However, there are some overlaps.

An accent is also specific to a region. In English, there might be an American, British, or Australian accent. An accent is an inflection that occurs with word pronunciation.
A dialect is entirely different words or ways of communicating altogether. Dialect goes beyond mere pronunciation.

Examples of Accent:

An Southern Oriya area pronounce the word, “Kemiti,” is spoken “Kenti”.
A Western Oriya pronounce the word, “Kemiti,” is spoken “Kenta”.
This is still the same word, just spoken with a different accent.

Examples of Dialect:

A Coastal area might say, “Semiti”
A Western area might say, “Henta”
This is an example of the differences in dialect.
Dialect Examples
Different dialects exists in Oriya Language, and in all areas of spoken Odia. There are dialects for each region, in fact. Even if the particular peoples of that region do not think they speak in a dialect, they probably do.

Some of the more pronounced regional dialects are the Northeastern (East Coast), Southern dialects and Western dialects.

Someone from the East Coast might say, “Kemiti Achha?” the Southern & Western Oriya would understand this, but would probably never say it.
Someone from the South might say, “Bhal Bhal ta?” the Northeastern & Western Oriya would understand this, but probably never say it.
Someone from the West Well might say,“Bone Bone ki?” the Northeastern & Southern would understand this, but probably never say it.
Katikiya Dialect
Katikiya is a dialect of oriya people from different region think katiki is the standard dialect it is false thing developed by politicians. Here how it is different. This Odia is limited to Cuttuck & Puri

Cha/Chi

kataki people use cha/chi instead of chha , chhi

Karuchi - Karuchhi
Aanuchi - Aanuchhi

Kou

Kou is also kataki dialect 90% people living residing in Odisha don't know this here's it.

Kou - Keu
Kouthi - Keuthi
Jouthi - Jeuthi

Words

There are many words which change in this dialect

Jhua - Jhia (Daughter)
Kauchi - Kahuchhi(Saying)
Bedana - Dalimba (pomegranate )
uchhura - deri/bilamba (Late)
dahada - Usuma(Hot)
hemaala - Sitala(Cold)
kolapa-kanchi - taalaa-chaabi(Lock - Key)
nityaani - khira(type of sweet or Milk)
kati - paakha(Near)
thein - paakhaku or sangare/sahita(With) Many more.

Sambalapuriya Dialect
Sambalapuriya is a major dialect of Oriya limited to bolangir & sambalapura this langauge is most endangered langauge. Extiction may occur if people will not take it seriously. People from other state try to impose their language into this to capture it but odia people always remain same during 1900 people of sambalapura fought against Hindi language, nowdays dialects of Hindi(Kosali, Chhattisgarhi etc Bhojpuri) is killing sambalapuri langauge. It is actually not peoples' fault it is because of Hindi Official Langauge of India. Central India gave powers to Hindi and it's people so then can intrude anywhere and claim it their region (Like Kosala kingdom).

Sa/Si

Sambalapuriya people use Sa/Si instead of chha, chhi. Although they use both Cha/Chha people still use Sa/Si because of English British rule.

Karsi - Karuchhi
Aansi - Aanuchhi

San/Chhan

Sambalapuriya dialect also drop 'anti' to make plural sentences due to Bengal Rule. This dialect also drop 'ti'

Karsan - Karuchhan - Karuchhanti

Kenna

People Change the use keuthi and prefer using kenna because of bengali imposition of Keno

Keunthi - Kenna
Jeunthi - Jenna

Dropping Vowel

This feature came from Maratha Empire during chhatrapati shivaji rule in India or maybe Bengali through Hindi to drop the central 'i' & sometimes 'u' in any verbs tense, it is grammitically wrong in Standard Oriya Langauge.

Aanli - Aanili
Daakli - Daakili
Aansa - Aanuchha
Telgu - Telugu

No Retroflex Sound

Retroflex consonant is coronal where the tongue has a flat concave, or even curled shape and articulated between alveolar ridge and the hard palate.

Desiya Odia
Desiya Odia is a dialect of Oriya it is also known as Adibasi Odia or Old Oriya spoken in Koraput-Rayagada-kalahandi (Kalahandiya Koraputiya is also know as Desiya Oriya). The major this we can distinguish Desiya & kalahandia is that sambalpuri people drop actual standard retroflex sound in Dhangada(Desiya Odia) and Dhangara(Sambalapuri Odia) meaning is same "young"

Che/Chhe

Unlike sambalpuri in this Odia dialect sa/si/chi/chhi can be replaced with che/chhe

Karuche - Karuchhi
Nuchhe - Nauchhu
Kauche - kahuchhe

Kinti/Kenti

All regions use their own form for this


Kinti/Kenti - Keuthi
Ken saag khauchha - Desiya
Kaye saag khaesa - Sambalpuri

Words

There are many words which change in this dialect

Jhia - Jhi (Daughter)
Kauche - Kahuchhi(Saying)
Uweel - Pyaja (Onion )
Bhejera - Tomato
Many more.

Other Dialects
Except this there are many different dialects in odisha it changes in every 100km.