chest vs tool chest

chest and tool chest both are nouns.

Word	Noun	Adjective	Verb	Adverb
chest	Yes	No	No	No
tool chest	Yes	No	No	No

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

chest (noun)	tool chest (noun)
box with a lid; used for storage; usually large and sturdy	a box or chest or cabinet for holding hand tools
furniture with drawers for keeping clothes
the part of the human torso between the neck and the diaphragm or the corresponding part in other vertebrates
the front of the trunk from the neck to the abdomen