souvlaki vs kabob

souvlaki and kabob both are nouns.

Word	Noun	Adjective	Verb	Adverb
souvlaki	Yes	No	No	No
kabob	Yes	No	No	No

As nouns, kabob is a hypernym of souvlaki; that is, kabob is a word with a broader meaning than souvlaki:

souvlaki: made of lamb
kabob: cubes of meat marinated and cooked on a skewer usually with vegetables

Other hypernyms of souvlaki include kebab, shish kebab.

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