apogamy vs apomixis

apogamy and apomixis both are nouns.

Word	Noun	Adjective	Verb	Adverb
apogamy	Yes	No	No	No
apomixis	Yes	No	No	No

As nouns, apomixis is a hypernym of apogamy; that is, apomixis is a word with a broader meaning than apogamy:

apogamy: (botany) development of an embryo without fertilization; especially the development in some ferns of a sporophyte from the gametophyte without fertilization
apomixis: any of several kinds of reproduction without fertilization

apogamy (noun)	apomixis (noun)
(botany) development of an embryo without fertilization; especially the development in some ferns of a sporophyte from the gametophyte without fertilization	any of several kinds of reproduction without fertilization