conductor vs heat sink

conductor and heat sink both are nouns.

Word	Noun	Adjective	Verb	Adverb
conductor	Yes	No	No	No
heat sink	Yes	No	No	No

As nouns, heat sink is a hyponym of conductor; that is, heat sink is a word with a more specific, narrower meaning than conductor:

conductor: a device designed to transmit electricity, heat, etc.
heat sink: a metal conductor specially designed to conduct (and radiate) heat

conductor (noun)	heat sink (noun)
a device designed to transmit electricity, heat, etc.	a metal conductor specially designed to conduct (and radiate) heat
the person who leads a musical group
the person who collects fares on a public conveyance
a substance that readily conducts e.g. electricity and heat