turn vs stem

turn and stem both are nouns.

Word	Noun	Adjective	Verb	Adverb
turn	Yes	No	Yes	No
stem	Yes	No	Yes	No

As nouns, stem is a hyponym of turn; that is, stem is a word with a more specific, narrower meaning than turn:

turn: the act of changing or reversing the direction of the course
stem: a turn made in skiing; the back of one ski is forced outward and the other ski is brought parallel to it

turn (noun)	stem (noun)
the act of changing or reversing the direction of the course	a turn made in skiing; the back of one ski is forced outward and the other ski is brought parallel to it
the act of turning away or in the opposite direction	front part of a vessel or aircraft
taking a short walk out and back	the tube of a tobacco pipe
a favor for someone	cylinder forming a long narrow part of something
(game) the activity of doing something in an agreed succession	(linguistics) the form of a word after all affixes are removed
turning or twisting around (in place)	a slender or elongated structure that supports a plant or fungus or a plant part or plant organ
a short performance that is part of a longer program
a movement in a new direction
an unforeseen development
a circular segment of a curve
(sports) a division of a game during which one team is on the offensive
a time period for working (after which you will be relieved by someone else)

turn (verb)	stem (verb)
twist suddenly so as to sprain	stop the flow of a liquid
change to the contrary	remove the stem from
go sour or spoil	grow out of, have roots in, originate in
pass into a condition gradually, take on a specific property or attribute; become	cause to point inward
undergo a transformation or a change of position or action
change color
become officially one year older
have recourse to or make an appeal or request for help or information to
direct at someone
shape by rotating on a lathe or cutting device or a wheel
let (something) fall or spill from a container
alter the functioning or setting of
cause (an object) to assume a crooked or angular form
to break and turn over earth especially with a plow
to change orientation or direction
cause to move around a center so as to show another side of
cause to move around or rotate
pass to the other side of
move around an axis or a center
to send or let go
cause to move along an axis or into a new direction
channel one's attention, interest, thought, or attention toward or away from something
get by buying and selling
accomplish by rotating
undergo a change or development
cause to change or turn into something different;assume new characteristics