body of water vs shoal

body of water and shoal both are nouns.

Word	Noun	Adjective	Verb	Adverb
body of water	Yes	No	No	No
shoal	Yes	No	Yes	No

As nouns, shoal is a hyponym of body of water; that is, shoal is a word with a more specific, narrower meaning than body of water:

body of water: the part of the earth's surface covered with water (such as a river or lake or ocean)
shoal: a stretch of shallow water

body of water (noun)	shoal (noun)
the part of the earth's surface covered with water (such as a river or lake or ocean)	a large group of fish
	a stretch of shallow water
	a sandbank in a stretch of water that is visible at low tide

body of water (verb)	shoal (verb)
	become shallow
	make shallow