gas cooker vs stove

gas cooker and stove both are nouns.

Word	Noun	Adjective	Verb	Adverb
gas cooker	Yes	No	No	No
stove	Yes	No	No	No

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

Other hypernyms of gas cooker include cooking stove, kitchen range, kitchen stove, range.

gas cooker (noun)	stove (noun)
a range with gas rings and an oven for cooking with gas	any heating apparatus
	a kitchen appliance used for cooking food