homo vs homosexual

homo and homosexual both are nouns.

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

As nouns, homo and homosexual are synonyms defined as:

homo and homosexual: someone who is sexually attracted to persons of the same sex

Other synonyms of homo include gay, homophile.

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

homo (adjective)	homosexual (adjective)
	sexually attracted to members of your own sex