As a noun amid

is amide.

As an adverb astride is

with one’s legs on either side.

As a preposition astride is

with one’s legs on either side of.

As nouns the difference between trains and dolphins

is that trains is while dolphins is .

As a verb trains

is (train).

As nouns the difference between megafauna and meiofauna

is that megafauna is the large animals of a given region or time, considered as a group while meiofauna is a type of interstitial fauna, such as psammon, found in rock fissures, between the grains of loose sediments, on algae, etc. It is a part of the microfauna.

As nouns the difference between appreciation and proficient

is that appreciation is appreciation while proficient is an expert.

As an adjective proficient is

good at; skilled; fluent; practiced, especially in relation to a task or skill.

As adjectives the difference between broad and basic

is that broad is wide in extent or scope while basic is basic.

As a noun broad

is (dated) a prostitute, a woman of loose morals.

As adverbs the difference between amidship and amidships

is that amidship is in the middle of a ship (as opposed to bow or stern) while amidships is in the middle of a ship, either longitudinally or laterally.

As an interjection amidships is

a helm order, normally shortened to midships!, to centre the helm in the line of the keel.

As adjectives the difference between immodest and unmodest

is that immodest is lacking in modesty; shameless while unmodest is not modest.

As adjectives the difference between secondhand and refurbished

is that secondhand is (of goods) not new; previously owned and used by another while refurbished is rebuilt or replenished with all new material; or, restored to original (or better) working order and appearance.

As an adverb secondhand

is indirectly.

As a verb refurbished is

(refurbish).

As nouns the difference between friend and client

is that friend is a quaker; a member of the while client is client, customer.

As a proper noun friend

is .

As a verb integrated

is (integrate).

As an adjective integrated

is composed and coordinated to form a whole.

As a noun college is

academy.