gayness vs pederasty

gayness and pederasty both are nouns.

Word	Noun	Adjective	Verb	Adverb
gayness	Yes	No	No	No
pederasty	Yes	No	No	No

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

gayness: a sexual attraction to (or sexual relations with) persons of the same sex
pederasty: sexual relations between a man and a boy (usually anal intercourse with the boy as a passive partner)

Other hyponyms of gayness include inversion, sexual inversion, lesbianism, sapphism, paederasty.

gayness (noun)	pederasty (noun)
a sexual attraction to (or sexual relations with) persons of the same sex	sexual relations between a man and a boy (usually anal intercourse with the boy as a passive partner)