paleobotany vs botany

paleobotany and botany both are nouns.

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

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

Other hypernyms of paleobotany include phytology, palaeobiology, paleobiology.

paleobotany (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