inhalation anesthetic vs inhalation anaesthetic

inhalation anesthetic and inhalation anaesthetic both are nouns.

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

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

inhalation anesthetic and inhalation anaesthetic: a gas that produces general anesthesia when inhaled

Other synonyms of inhalation anesthetic include inhalation general anaesthetic, inhalation general anesthetic.

inhalation anesthetic (noun)	inhalation anaesthetic (noun)
a gas that produces general anesthesia when inhaled	a gas that produces general anesthesia when inhaled