abscise vs cast off

abscise and cast off both are verbs.

Word	Noun	Adjective	Verb	Adverb
abscise	No	No	Yes	No
cast off	No	No	Yes	No

As verbs, cast off is a hypernym of abscise; that is, cast off is a word with a broader meaning than abscise:

abscise: shed flowers and leaves and fruit following formation of a scar tissue
cast off: to remove

Other hypernyms of abscise include cast, drop, shake off, shed, throw, throw away, throw off.

abscise (verb)	cast off (verb)
remove or separate by abscission	to remove
shed flowers and leaves and fruit following formation of a scar tissue	make the last row of stitches when knitting