anaesthetic agent vs anesthetic agent

anaesthetic agent and anesthetic agent both are nouns.

Word	Noun	Adjective	Verb	Adverb
anaesthetic agent	Yes	No	No	No
anesthetic agent	Yes	No	No	No

As nouns, anaesthetic agent and anesthetic agent are synonyms defined as:

anaesthetic agent and anesthetic agent: a drug that causes temporary loss of bodily sensations

Other synonyms of anaesthetic agent include anaesthetic, anesthetic.

anaesthetic agent (noun)	anesthetic agent (noun)
a drug that causes temporary loss of bodily sensations	a drug that causes temporary loss of bodily sensations