vegetation vs botany

vegetation and botany both are nouns.

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

As nouns, vegetation and botany are synonyms defined as:

vegetation and botany: all the plant life in a particular region or period

Other synonyms of vegetation include flora.

vegetation (noun)	botany (noun)
inactivity that is passive and monotonous, comparable to the inactivity of plant life	the branch of biology that studies plants
an abnormal growth or excrescence (especially a warty excrescence on the valves of the heart)	all the plant life in a particular region or period
all the plant life in a particular region or period
the process of growth in plants