river vs shore

river and shore both are nouns.

Word	Noun	Adjective	Verb	Adverb
river	Yes	No	No	No
shore	Yes	No	Yes	No

river (noun)	shore (noun)
a large natural stream of water (larger than a creek)	a beam or timber that is propped against a structure to provide support
	the land along the edge of a body of water

river (verb)	shore (verb)
	support by placing against something solid or rigid
	arrive on shore
	serve as a shore to