swoon vs loss of consciousness

swoon and loss of consciousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
swoon	Yes	No	Yes	No
loss of consciousness	Yes	No	No	No

As nouns, loss of consciousness is a hypernym of swoon; that is, loss of consciousness is a word with a broader meaning than swoon:

swoon: a spontaneous loss of consciousness caused by insufficient blood to the brain
loss of consciousness: the occurrence of a loss of the ability to perceive and respond

swoon (noun)	loss of consciousness (noun)
a spontaneous loss of consciousness caused by insufficient blood to the brain	the occurrence of a loss of the ability to perceive and respond

swoon (verb)	loss of consciousness (verb)
pass out from weakness, physical or emotional distress due to a loss of blood supply to the brain