Theory of Machine
When the nature of contact between the elements of a pair is such that it can only slide relative to the other, the pair is known as a

Sliding pair
Turning pair
Spherical pair
Screw pair

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
Kinematic pairs are those which have

Point or line contact between the two elements when in motion
Elements of pairs not held together mechanically
Two elements that permit relative motion
Surface contact between the two elements when in motion

ANSWER DOWNLOAD EXAMIANS APP