contrivance vs strategy

contrivance and strategy both are nouns.

Word	Noun	Adjective	Verb	Adverb
contrivance	Yes	No	No	No
strategy	Yes	No	No	No

As nouns, strategy is a hypernym of contrivance; that is, strategy is a word with a broader meaning than contrivance:

Other hypernyms of contrivance include scheme.

contrivance (noun)	strategy (noun)
the act of devising something	an elaborate and systematic plan of action
a device or control that is very useful for a particular job	the branch of military science dealing with military command and the planning and conduct of a war
any improvised arrangement for temporary use
an elaborate or deceitful scheme contrived to deceive or evade
the faculty of contriving; inventive skill
an artificial or unnatural or obviously contrived arrangement of details or parts etc.