kebab vs souvlakia

kebab and souvlakia both are nouns.

Word	Noun	Adjective	Verb	Adverb
kebab	Yes	No	No	No
souvlakia	Yes	No	No	No

As nouns, souvlakia is a hyponym of kebab; that is, souvlakia is a word with a more specific, narrower meaning than kebab:

kebab: cubes of meat marinated and cooked on a skewer usually with vegetables
souvlakia: made of lamb

Other hyponyms of kebab include souvlaki.

kebab (noun)	souvlakia (noun)
cubes of meat marinated and cooked on a skewer usually with vegetables	made of lamb