Heimlich maneuver vs Heimlich manoeuvre

Heimlich maneuver and Heimlich manoeuvre both are nouns.

Word	Noun	Adjective	Verb	Adverb
Heimlich maneuver	Yes	No	No	No
Heimlich manoeuvre	Yes	No	No	No

As nouns, Heimlich maneuver and Heimlich manoeuvre are synonyms defined as:

Heimlich maneuver and Heimlich manoeuvre: an emergency procedure to help someone who is choking because food is lodged in the trachea

Heimlich maneuver (noun)	Heimlich manoeuvre (noun)
an emergency procedure to help someone who is choking because food is lodged in the trachea	an emergency procedure to help someone who is choking because food is lodged in the trachea