front legs of the horse.

[keannu]

The opposite of "front legs" of animas is "hind legs". Does "hind" mean "hidden" or just "back part"? And can't "back legs" replace "front legs"?

ji11)The Winged Horse in the sky is made up of fourteen stars. There is a group of four stars in the middle. There four stars from the body of the horse. The other stars from the neck, head, andfront legsof the horse.

 

[JMurray]

Definition of "hind".
Definition of hind | Collins English Dictionary

Your second question doesn't make sense. Perhaps you meant, "Can't "back legs" replace "hind legs"?
I think that in most cases "back legs" would be common usage, but I suspect that people who are around horses a lot would normally say "hind legs".

not a teacher

 

[Rover_KE]

I suspect that people who are around horses a lot would normally say "hind legs".

I agree, and they would call the front legs forelegs (one word).

Rover