cooker vs cooking utensil

cooker and cooking utensil both are nouns.

Word	Noun	Adjective	Verb	Adverb
cooker	Yes	No	No	No
cooking utensil	Yes	No	No	No

As nouns, cooking utensil is a hypernym of cooker; that is, cooking utensil is a word with a broader meaning than cooker:

cooker: a utensil for cooking
cooking utensil: a kitchen utensil made of material that does not melt easily; used for cooking

Other hypernyms of cooker include cookware.

cooker (noun)	cooking utensil (noun)
a utensil for cooking	a kitchen utensil made of material that does not melt easily; used for cooking