shoal vs shallow

shoal and shallow both are nouns.

Word	Noun	Adjective	Verb	Adverb
shoal	Yes	No	Yes	No
shallow	Yes	Yes	Yes	No

As nouns, shoal and shallow are synonyms defined as:

As verbs, shoal and shallow are synonyms defined as:

As verbs, shoal and shallow are synonyms defined as:

shoal (noun)	shallow (noun)
a large group of fish	a stretch of shallow water
a stretch of shallow water
a sandbank in a stretch of water that is visible at low tide

shoal (adjective)	shallow (adjective)
	lacking physical depth; having little spatial extension downward or inward from an outer surface or backward or outward from a center
	not deep or strong; not affecting one deeply
	lacking depth of intellect or knowledge; concerned only with what is obvious

shoal (verb)	shallow (verb)
become shallow	become shallow
make shallow	make shallow