shortened vs sawn-off

shortened and sawn-off both are adjectives.

Word	Noun	Adjective	Verb	Adverb
shortened	No	Yes	No	No
sawn-off	No	Yes	No	No

As adjectives, shortened and sawn-off are synonyms defined as:

Other synonyms of shortened include sawed-off.

shortened (adjective)	sawn-off (adjective)
with parts removed	shortened
cut short in duration	well below average height
shortened
shortened by or as if by means of parts that slide one within another or are crushed one into another