homo vs lesbian

homo and lesbian both are nouns.

Word	Noun	Adjective	Verb	Adverb
homo	Yes	No	No	No
lesbian	Yes	Yes	No	No

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

homo (noun)	lesbian (noun)
any living or extinct member of the family Hominidae characterized by superior intelligence, articulate speech, and erect carriage	a female homosexual
someone who is sexually attracted to persons of the same sex

homo (adjective)	lesbian (adjective)
	of or relating to or characterized by homosexual relations between woman