set vs sign

set and sign both are nouns.

Word	Noun	Adjective	Verb	Adverb
set	Yes	Yes	Yes	No
sign	Yes	Yes	Yes	No

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

set (noun)	sign (noun)
several exercises intended to be done in series	structure displaying a board on which advertisements can be posted
the act of putting something in position	a public display of a message
representation consisting of the scenery and other properties used to identify the location of a dramatic production	a gesture that is part of a sign language
any electronic equipment that receives or transmits radio or tv signals	any nonverbal action or gesture that encodes a message
(psychology) being temporarily ready to respond in a particular way	a character indicating a relation between quantities
a relatively permanent inclination to react in a particular way	a perceptible indication of something not immediately apparent (as a visible clue that something has happened)
the descent of a heavenly body below the horizon	a fundamental linguistic unit linking a signifier to that which is signified
a group of things of the same kind that belong together and are so used	an event that is experienced as indicating important things to come
an unofficial association of people or groups	(astrology) one of 12 equal areas into which the zodiac is divided
(mathematics) an abstract collection of numbers or symbols	having an indicated pole (as the distinction between positive and negative electric charges)
the process of becoming hard or solid by cooling or drying or crystallization	(medicine) any objective evidence of the presence of a disorder or disease
a unit of play in tennis or squash

set (adjective)	sign (adjective)
set down according to a plan	used of the language of the deaf
being below the horizon
converted to solid form (as concrete)
fixed and unmoving
(usually followed by `to' or `for') on the point of or strongly disposed
situated in a particular spot or position
determined or decided upon as by an authority

set (verb)	sign (verb)
arrange attractively	be engaged by a written agreement
produce fruit	communicate silently and non-verbally by signals or signs
alter or regulate so as to achieve accuracy or conform to a standard	mark with one's signature; write one's name (on)
put into a certain state; cause to be in a certain state	make the sign of the cross over someone in order to call on God for protection; consecrate
set to a certain position or cause to operate correctly	communicate in sign language
equip with sails or masts	place signs, as along a road
become gelatinous	approve and express assent, responsibility, or obligation
make ready or suitable or equip in advance for a particular purpose or for some use, event, etc	engage by written agreement
get ready for a particular purpose or event
fix conclusively or authoritatively
estimate
decide upon or fix definitely
establish as the highest level or best performance
urge to attack someone
put into a certain place or abstract location
fix in a border
give a fine, sharp edge to a knife or razor
insert (a nail or screw below the surface, as into a countersink)
put or set (seeds, seedlings, or plants) into the ground
put into a position that will restore a normal state
adapt for performance in a different way
locate
set in type
apply or start
disappear beyond the horizon