westbound

As adverbs the difference between westbound and westerly

is that westbound is towards the west; in a westerly direction while westerly is towards the west.

As adjectives the difference between westbound and westerly

is that westbound is which is, or will be, moving towards the west while westerly is situated in the west.

As a noun westerly is

a westerly wind or storm.

As a noun taxonomy

is the science or the technique used to make a classification.

As an adverb westbound is

towards the west; in a westerly direction.

As an adjective westbound is

which is, or will be, moving towards the west.

As adjectives the difference between eastbound and westbound

is that eastbound is moving or heading towards the east while westbound is which is, or will be, moving towards the west.

As adverbs the difference between eastbound and westbound

is that eastbound is toward the east while westbound is towards the west; in a westerly direction.