As nouns the difference between heap and bulk

is that heap is heap while bulk is size, mass or volume.

As an adjective bulk is

being large in size, mass or volume (of goods, etc).

As a verb bulk is

to appear or seem to be, as to bulk or extent.

As nouns the difference between approach and approximation

is that approach is the act of drawing near; a coming or advancing near while approximation is the act, process or result of approximating.

As a verb approach

is to come or go near, in place or time; to draw nigh; to advance nearer.

In lang=en terms the difference between flap and trig

is that flap is to move loosely back and forth while trig is to stop (a wheel, barrel, etc) by placing something under it; to scotch; to skid.

As nouns the difference between flap and trig

is that flap is anything broad and flexible that hangs loose, or that is attached by one side or end and is easily moved while trig is a dandy; coxcomb or trig can be (uncountable) trigonometry or trig can be (uk) a stone, block of wood, or anything else, placed under a wheel or barrel to prevent motion; a scotch; a skid.

As verbs the difference between flap and trig

is that flap is to move (something broad and loose) back and forth while trig is to stop (a wheel, barrel, etc) by placing something under it; to scotch; to skid or trig can be to fill; to stuff; to cram.

As an adjective trig is

true; trusty; trustworthy; faithful.

As nouns the difference between loop and dangling

is that loop is a length of thread, line or rope that is doubled over to make an opening while dangling is the act of hanging something so that it can move freely; suspension.

As verbs the difference between loop and dangling

is that loop is to form something into a loop while dangling is present participle of lang=en.

As an adjective dangling is

suspended from above.

As an adjective mandatory

is obligatory; required or commanded by authority.

As a noun mandatory

is (dated|rare) a person, organisation or state who receives a mandate; a mandatary.

As a verb mandating is

.

As a proper noun mount

is .

As a noun frame is

frame, division of time on a multimedia timeline.

As a noun agedness

is the state or quality of being aged.

As an adverb agedly is

in an aged manner.

As nouns the difference between broadcasting and communication

is that broadcasting is (business) the business or profession of radio and television while communication is the act or fact of communicating anything; transmission.

As an adjective broadcasting

is sending in all directions.

As a verb broadcasting

is .

As nouns the difference between principle and requirement

is that principle is a fundamental assumption while requirement is a necessity or prerequisite; something required or obligatory.

As a verb principle

is to equip with principles; to establish, or fix, in certain principles; to impress with any tenet or rule of conduct.

As proper nouns the difference between hillary and bill

is that hillary is {{given name|female|from=Latin}} ultimately derived from the Latin Hilaria while Bill is a diminutive of the male given name William.

As a noun bill is

any of various bladed or pointed hand weapons, originally designating an Anglo-Saxon sword, and later a weapon of infantry, especially in the 14th and 15th centuries, commonly consisting of a broad, heavy, double-edged, hook-shaped blade, with a short pike at the back and another at the top, attached to the end of a long staff.

As a verb bill is

to dig, chop, etc., with a bill.