pomology vs botany

pomology and botany both are nouns.

Word	Noun	Adjective	Verb	Adverb
pomology	Yes	No	No	No
botany	Yes	No	No	No

As nouns, botany is a hypernym of pomology; that is, botany is a word with a broader meaning than pomology:

Other hypernyms of pomology include phytology.

pomology (noun)	botany (noun)
the branch of botany that studies and cultivates fruits	the branch of biology that studies plants
	all the plant life in a particular region or period