turn vs left

turn and left both are nouns.

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

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

turn: the act of changing or reversing the direction of the course
left: a turn toward the side of the body that is on the north when the person is facing east

turn (noun)	left (noun)
the act of changing or reversing the direction of the course	a turn toward the side of the body that is on the north when the person is facing east
the act of turning away or in the opposite direction	the piece of ground in the outfield on the catcher's left
taking a short walk out and back	the hand that is on the left side of the body
a favor for someone	those who support varying degrees of social or political or economic change designed to promote the public welfare
(game) the activity of doing something in an agreed succession	location near or direction toward the left side; i.e. the side to the north when a person or object faces east
turning or twisting around (in place)
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 (adjective)	left (adjective)
	being or located on or directed toward the side of the body to the west when facing north
	of or belonging to the political or intellectual left
	intended for the left hand
	not used up

turn (verb)	left (verb)
twist suddenly so as to sprain
change to the contrary
go sour or spoil
pass into a condition gradually, take on a specific property or attribute; become
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

turn (adverb)	left (adverb)
	toward or on the left; also used figuratively