herald vs tell

herald is a noun but tell is not a noun.

Word	Noun	Adjective	Verb	Adverb
herald	Yes	No	Yes	No
tell	No	No	Yes	No

As verbs, tell is a hypernym of herald; that is, tell is a word with a broader meaning than herald:

herald (noun)	tell (noun)
something that precedes and indicates the approach of something or someone
(formal) a person who announces important news

herald (verb)	tell (verb)
foreshadow or presage	discern or comprehend
praise vociferously	mark as different
greet enthusiastically or joyfully	let something be known
	narrate or give a detailed account of
	give instructions to or direct somebody to do something with authority
	give evidence
	express in words
	inform positively and with certainty and confidence