splay vs spread out

splay is a noun but spread out is not a noun.

Word	Noun	Adjective	Verb	Adverb
splay	Yes	Yes	Yes	No
spread out	No	No	Yes	No

As verbs, splay and spread out are synonyms defined as:

Other synonyms of splay include rotate, turn out.

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

Other hypernyms of splay include open, spread, unfold.

splay (noun)	spread out (noun)
an outward bevel around a door or window that makes it seem larger

splay (adjective)	spread out (adjective)
turned outward in an ungainly manner

splay (verb)	spread out (verb)
move out of position	set out or stretch in a line, succession, or series
turn outward	spread out or open from a closed or folded state
spread open or apart	move outward
	extend in one or more directions
	move away from each other
	turn outward
	strew or distribute over an area