homophobia vs preconception

homophobia and preconception both are nouns.

Word	Noun	Adjective	Verb	Adverb
homophobia	Yes	No	No	No
preconception	Yes	No	No	No

As nouns, preconception is a hypernym of homophobia; that is, preconception is a word with a broader meaning than homophobia:

homophobia: prejudice against (fear or dislike of) homosexual people and homosexuality
preconception: a partiality that prevents objective consideration of an issue or situation

Other hypernyms of homophobia include bias, prejudice.

homophobia (noun)	preconception (noun)
prejudice against (fear or dislike of) homosexual people and homosexuality	an opinion formed beforehand without adequate evidence
	a partiality that prevents objective consideration of an issue or situation