dyspnoeal vs smothering

dyspnoeal and smothering both are adjectives.

Word	Noun	Adjective	Verb	Adverb
dyspnoeal	No	Yes	No	No
smothering	No	Yes	No	No

dyspnoeal (adjective)	smothering (adjective)
not breathing or able to breathe except with difficulty	causing difficulty in breathing especially through lack of fresh air and presence of heat