gas range vs gas cooker

gas range and gas cooker both are nouns.

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

As nouns, gas range and gas cooker are synonyms defined as:

gas range and gas cooker: a range with gas rings and an oven for cooking with gas

Other synonyms of gas range include gas stove.

gas range (noun)	gas cooker (noun)
a range with gas rings and an oven for cooking with gas	a range with gas rings and an oven for cooking with gas