turn vs ruff

turn and ruff both are nouns.

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

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

turn: (game) the activity of doing something in an agreed succession
ruff: (card games) the act of taking a trick with a trump when unable to follow suit

Other hyponyms of turn include move, start, starting, innings, attack, down, at-bat, bat, lead, trumping, trick, hole-in-one.

turn (noun)	ruff (noun)
the act of changing or reversing the direction of the course	(card games) the act of taking a trick with a trump when unable to follow suit
the act of turning away or in the opposite direction	common Eurasian sandpiper; the male has an erectile neck ruff in breeding season
taking a short walk out and back	a high tight collar
a favor for someone	an external body part consisting of feathers or hair about the neck of a bird or other animal
(game) the activity of doing something in an agreed succession
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 (verb)	ruff (verb)
twist suddenly so as to sprain	play a trump
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