palaeobotany vs botany

palaeobotany and botany both are nouns.

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

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

Other hypernyms of palaeobotany include phytology, palaeobiology, paleobiology.

palaeobotany (noun)	botany (noun)
the study of fossil plants	the branch of biology that studies plants
	all the plant life in a particular region or period