control key vs command key

control key and command key both are nouns.

Word	Noun	Adjective	Verb	Adverb
control key	Yes	No	No	No
command key	Yes	No	No	No

As nouns, control key and command key are synonyms defined as:

control key and command key: (computer science) the key on a computer keyboard that is used (in combination with some other key) to type control characters

control key (noun)	command key (noun)
(computer science) the key on a computer keyboard that is used (in combination with some other key) to type control characters	(computer science) the key on a computer keyboard that is used (in combination with some other key) to type control characters