ratch

As nouns the difference between watch and ratch

is that watch is a portable or wearable timepiece while ratch is a ratchet wheel; a toothed wheel engaging a detent or pawl.

As a verb watch

is (label) to look at, see, or view for a period of time.

As nouns the difference between catch and ratch

is that catch is (countable) the act of seizing or capturing (jump) while ratch is a ratchet wheel; a toothed wheel engaging a detent or pawl.

As a verb catch

is (lb) to capture, overtake .