stand vs hold still for

stand is a noun but hold still for is not a noun.

Word	Noun	Adjective	Verb	Adverb
stand	Yes	No	Yes	No
hold still for	No	No	Yes	No

As verbs, hold still for is a hyponym of stand; that is, hold still for is a word with a more specific, narrower meaning than stand:

Other hyponyms of stand include accept, live with, swallow, stand for, bear up, take lying down, take a joke, sit out, pay.

stand (noun)	hold still for (noun)
a defensive effort
a stop made by a touring musical or theatrical group to give a performance
a support or foundation
tiered seats consisting of a structure (often made of wood) where people can sit to watch an event (game or parade)
a platform where a (brass) band can play in the open air
a support for displaying ot holding various articles
a small table for holding articles of various kinds
a booth where articles are displayed for sale
a mental position from which things are viewed
an interruption of normal activity
a growth of similar plants (usually trees) in a particular area
the position where a thing or person stands

stand (verb)	hold still for (verb)
put up with something or somebody unpleasant	tolerate or bear
have or maintain a position or stand on an issue
withstand the force of something
be standing; be upright
put into an upright position
be available for stud services
hold one's ground; maintain a position; be steadfast or upright
be tall; have a height of; copula
be in effect; be or remain in force
occupy a place or location, also metaphorically
be in some specified state or condition
remain inactive or immobile