zero in vs home in

zero in and home in both are verbs.

Word	Noun	Adjective	Verb	Adverb
zero in	No	No	Yes	No
home in	No	No	Yes	No

As verbs, zero in and home in are synonyms defined as:

zero in and home in: direct onto a point or target, especially by automatic navigational aids

Other synonyms of zero in include range in.

zero in (verb)	home in (verb)
adjust (as by firing under test conditions) the zero of (a gun)	direct onto a point or target, especially by automatic navigational aids
direct onto a point or target, especially by automatic navigational aids