tin vs tea caddy

tin and tea caddy both are nouns.

Word	Noun	Adjective	Verb	Adverb
tin	Yes	No	Yes	No
tea caddy	Yes	No	No	No

As nouns, tea caddy is a hyponym of tin; that is, tea caddy is a word with a more specific, narrower meaning than tin:

Other hyponyms of tin include beer can, caddy, cannikin, coffee can, milk can, oilcan, soda can.

tin (noun)	tea caddy (noun)
airtight sealed metal container for food or drink or paint etc.	a can for storing tea
metal container for storing dry foods such as tea or flour
a vessel (box, can, pan, etc.) made of tinplate and used mainly in baking
a silvery malleable metallic element that resists corrosion; used in many alloys and to coat other metals to prevent corrosion; obtained chiefly from cassiterite where it occurs as tin oxide

tin (verb)	tea caddy (verb)
preserve in a can or tin
prepare (a metal) for soldering or brazing by applying a thin layer of solder to the surface
plate with tin