As nouns the difference between equilibrium and equation

is that equilibrium is balance, equilibrium while equation is equation (assertion).

As a noun discus

is a round plate-like object that is thrown for sport.

As a verb argue is

to prove.

In intransitive terms the difference between spare and loose

is that spare is to be frugal; not to be profuse; to live frugally; to be parsimonious while loose is of a grip or hold, to let go.

In transitive terms the difference between spare and loose

is that spare is (to give up) To deprive oneself of, as by being frugal; to do without; to dispense with; to give up; to part with while loose is to make less tight, to loosen.

As adjectives the difference between spare and loose

is that spare is scanty; not abundant or plentiful while loose is not fixed in place tightly or firmly.

As nouns the difference between spare and loose

is that spare is the act of sparing; moderation; restraint while loose is the release of an arrow.

As verbs the difference between spare and loose

is that spare is to show mercy while loose is to let loose, to free from restraints.

As an interjection loose is

begin shooting; release your arrows.

In obsolete terms the difference between empty and shallow

is that empty is producing nothing; unfruitful; said of a plant or tree while shallow is not deep in tone.

As adjectives the difference between empty and shallow

is that empty is devoid of content; containing nothing or nobody; vacant while shallow is having little depth; significantly less deep than wide.

As verbs the difference between empty and shallow

is that empty is to make empty; to void; to remove the contents of while shallow is to make or become less deep.

As nouns the difference between empty and shallow

is that empty is a container, especially a bottle, whose contents have been used up, leaving it empty while shallow is a shallow portion of an otherwise deep body of water.

As nouns the difference between mission and objectives

is that mission is a set of tasks that fulfills a purpose or duty; an assignment set by an employer while objectives is plural of lang=en.

As a verb mission

is to send to a mission.

As a verb faster

is .

As an adjective slower is

(slow).

As a noun slower is

that which slows.

As nouns the difference between badass and tough

is that badass is a mean or belligerent person; a person with extreme attitudes, behavior or appearance while tough is a person who obtains things by force; a thug or bully.

As adjectives the difference between badass and tough

is that badass is having extreme appearance, attitude, or behavior that is considered admirable while tough is strong and resilient; sturdy.

As an interjection tough is

Used to indicate lack of sympathy

As a verb tough is

to endure.