Adrenalin vs adrenaline

Adrenalin and adrenaline both are nouns.

Word	Noun	Adjective	Verb	Adverb
Adrenalin	Yes	No	No	No
adrenaline	Yes	No	No	No

As nouns, Adrenalin and adrenaline are synonyms defined as:

Adrenalin and adrenaline: a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action

Other synonyms of Adrenalin include epinephrin, epinephrine.

Adrenalin (noun)	adrenaline (noun)
a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action	a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action