chorus frog vs tree frog

chorus frog and tree frog both are nouns.

Word	Noun	Adjective	Verb	Adverb
chorus frog	Yes	No	No	No
tree frog	Yes	No	No	No

As nouns, tree frog is a hypernym of chorus frog; that is, tree frog is a word with a broader meaning than chorus frog:

chorus frog: any of several small North American frogs having a loud call
tree frog: arboreal amphibians usually having adhesive disks at the tip of each toe; of southeast Asia and Australia and America

Other hypernyms of chorus frog include tree-frog, tree toad.

chorus frog (noun)	tree frog (noun)
any of several small North American frogs having a loud call	any of various Old World arboreal frogs distinguished from true frogs by adhesive suckers on the toes
	arboreal amphibians usually having adhesive disks at the tip of each toe; of southeast Asia and Australia and America