say vs express

say and express both are nouns.

Word	Noun	Adjective	Verb	Adverb
say	Yes	No	Yes	No
express	Yes	Yes	Yes	Yes

As verbs, express is a hypernym of say; that is, express is a word with a broader meaning than say:

Other hypernyms of say include give tongue to, utter, verbalise, verbalize.

As verbs, express is a hypernym of say; that is, express is a word with a broader meaning than say:

Other hypernyms of say include give tongue to, utter, verbalise, verbalize.

say (noun)	express (noun)
the chance to speak	rapid transport of goods
	public transport consisting of a fast train or bus that makes only a few scheduled stops
	mail that is distributed by a rapid and efficient system

say (adjective)	express (adjective)
	not tacit or implied
	without unnecessary stops

say (verb)	express (verb)
express in words	articulate; either verbally or with a cry, shout, or noise
report or maintain	give expression to
speak, pronounce, or utter in a certain way	serve as a means for expressing something
express a supposition	indicate through a symbol, formula, etc.
give instructions to or direct somebody to do something with authority	send by rapid transport or special messenger service
communicate or express nonverbally	obtain from a substance, as by mechanical action
recite or repeat a fixed text	manifest the effects of (a gene or genetic trait)
indicate
state as one's opinion or judgement; declare
utter aloud
have or contain a certain wording or form

say (adverb)	express (adverb)
	by express