As nouns the difference between homophobia and biphobia
is that homophobia is fear, dislike or hatred of gays and lesbians or homophobia can be (obsolete|individual occurrences) a pathological fear of mankind while biphobia is antipathy towards bisexuals.
homophobia
Etymology 1
homo (from (homosexual)) , coined in 1971 by in Society and the Healthy Homosexual .
Noun
Fear, dislike or hatred of gays and lesbians.
Synonyms
* (fear of homosexuality) homoerotophobia, heterosexism
Hyponyms
*gayphobia
*lesbophobia
Derived terms
* internalised homophobia
Related terms
* homophobe
* homophobic
Etymology 2
(etyl)
Noun
(-)
(obsolete, individual occurrences) A pathological fear of mankind.
Synonyms
* (fear of mankind) anthropophobia
Related terms
* homophobe
* homophobic
See also
* misanthropy
* androphobia
* gynophobia
biphobia
Noun
(-)
Antipathy towards bisexuals.
Derived terms
* biphobe
* biphobic