chat vs whinchat

chat and whinchat both are nouns.

Word	Noun	Adjective	Verb	Adverb
chat	Yes	No	Yes	No
whinchat	Yes	No	No	No

As nouns, whinchat is a hyponym of chat; that is, whinchat is a word with a more specific, narrower meaning than chat:

Other hyponyms of chat include Saxicola torquata, stonechat, Saxicola rubetra.

chat (noun)	whinchat (noun)
songbirds having a chattering call	brown-and-buff European songbird of grassy meadows
birds having a chattering call
an informal conversation

chat (verb)	whinchat (verb)
talk socially without exchanging too much information