set down vs undershoot

set down and undershoot both are verbs.

Word	Noun	Adjective	Verb	Adverb
set down	No	No	Yes	No
undershoot	No	No	Yes	No

As verbs, undershoot is a hyponym of set down; that is, undershoot is a word with a more specific, narrower meaning than set down:

set down (verb)	undershoot (verb)
put down in writing; of texts, musical compositions, etc.	shoot short of or below (a target)
remove (cargo, people, etc.) from and leave	fall short of (the runway) in a landing
put or settle into a position
cause to sit or seat or be in a settled position or place
go ashore
reach or come to rest