Here are some common equestrian terms and what they mean.

HORSE: An equine that is over 14.2 hands
PONY: An equine that is less than 14.2 hands
HANDS: The way a heigh of a horse or pony is described. One ‘hand’ is
approximately 4″
GROOMING: Brushing and preparing a horse or pony for riding
HOOF: A horse or pony’s foot
TACK: The equipment used on horse (such as saddle and bridle)
SADDLE: Leather or synthetic seating for riders placed on the horses
back
BRIDLE: The straps on a horses head that hold the bit and reins
BIT: Sits in the horse’s mouth and is controlled by the reins. Usually
metal but sometimes rubber or plastic.
REINS: The straps attached to the bit that help you stop and steer
GIRTH: The strap under a horses belly that holds the saddle in place
STIRRUPS: Where your feet are placed when sitting in the saddle
STIRRUP LEATHERS: The straps that hold the stirrups in place. These
can be changed in length to move how high or low the stirrups sit.
SADDLE PAD, SADDLE CLOTH OR NUMNAH: The padding that sits
under a horses saddle
NECK STRAP: A strap sometimes placed around a horses neck for
learner riders to hold on to help balance
LEAD REIN: A rope or rein used to lead a horse either from its
headcollar, bit or bridle
MOUNTING BLOCK: A block or step to stand on to help you mount
the horse or pony
ARENA / SAND SCHOOL/ MANEGE: The place where riding lessons
take place, an enclosed area usually with a surface of sand or rubber
ARENA LETTERS: Letters placed around the arena to help you know
where to stop, start, change speed or make movements
FLATWORK: A lesson that does not involve poles or jumps, working
on rider position, controls, and movements in the arena
POLE WORK/ GRIDWORK: A lesson that involved the use of poles or
jumps for exercises to improve rider position.
HACK: Going out for a ride on the roads or on bridleways