tattler vs gossip

tattler and gossip both are nouns.

Word	Noun	Adjective	Verb	Adverb
tattler	Yes	No	No	No
gossip	Yes	No	Yes	No

As nouns, gossip is a hypernym of tattler; that is, gossip is a word with a broader meaning than tattler:

tattler: someone who gossips indiscreetly
gossip: a person given to gossiping and divulging personal information about others

Other hypernyms of tattler include gossiper, gossipmonger, newsmonger, rumormonger, rumourmonger.

tattler (noun)	gossip (noun)
any of several long-legged shorebirds having a loud whistling cry	light informal conversation for social occasions
someone who gossips indiscreetly	a report (often malicious) about the behavior of other people
	a person given to gossiping and divulging personal information about others

tattler (verb)	gossip (verb)
	wag one's tongue; speak about others and reveal secrets or intimacies
	talk socially without exchanging too much information