skip vs leave out

skip is a noun but leave out is not a noun.

Word	Noun	Adjective	Verb	Adverb
skip	Yes	No	Yes	No
leave out	No	No	Yes	No

As verbs, leave out is a hypernym of skip; that is, leave out is a word with a broader meaning than skip:

Other hypernyms of skip include drop, miss, neglect, omit, overleap, overlook, pretermit.

skip (noun)	leave out (noun)
a mistake resulting from neglect
a gait in which steps and hops alternate

skip (verb)	leave out (verb)
bypass	leave undone or leave out
cause to skip over a surface	prevent from being included or considered or accepted
jump lightly
leave suddenly
bound off one point after another
intentionally fail to attend