abscission vs sloughing

abscission and sloughing both are nouns.

Word	Noun	Adjective	Verb	Adverb
abscission	Yes	No	No	No
sloughing	Yes	No	No	No

As nouns, sloughing is a hypernym of abscission; that is, sloughing is a word with a broader meaning than abscission:

abscission: shedding of flowers and leaves and fruit following formation of scar tissue in a plant
sloughing: the process whereby something is shed

Other hypernyms of abscission include shedding.

abscission (noun)	sloughing (noun)
the act of cutting something off	the process whereby something is shed
shedding of flowers and leaves and fruit following formation of scar tissue in a plant