As a verb domineer

is to rule over or control arbitrarily or arrogantly; to tyrannize.

As an adjective arbitrary is

(usually|of a decision) based on individual discretion or judgment; not based on any objective distinction, perhaps even made at random.

As a noun arbitrary is

anything arbitrary, such as an arithmetical value or a fee.

As a noun firefly

is any beetle of the family lampyridae, which exhibit bioluminescence during twilight.

As a proper noun octopus is

.

As nouns the difference between toady and ruffian

is that toady is a sycophant who flatters others to gain personal advantage while ruffian is a scoundrel, rascal, or unprincipled, deceitful, brutal and unreliable person.

As verbs the difference between toady and ruffian

is that toady is to behave like a toady (to someone) while ruffian is to play the ruffian; to rage; to raise tumult.

As an adjective ruffian is

brutal; cruel; savagely boisterous; murderous.

As nouns the difference between transposition and shift

is that transposition is the act or process of transposing or interchanging while shift is a type of women's undergarment, a slip.

As a verb shift is

to change, swap.

As nouns the difference between subtitle and dub

is that subtitle is a heading below or after a title while dub is (music) a mostly instrumental remix with all or part of the vocals removed or dub can be (uk|dialect) a pool or puddle or dub can be (slang) a twenty dollar sack of marijuana or dub can be (rare) a blow.

As verbs the difference between subtitle and dub

is that subtitle is to create subtitles for the dialog in a film while dub is (lb) to confer knighthood; the conclusion of the ceremony was marked by a tap on the shoulder with the sword or dub can be to make a copy from an original or master audio tape or dub can be to make a noise by brisk drumbeats.

As nouns the difference between computer and mechanism

is that computer is a person employed to perform computations; one who computes while mechanism is within a machine or machinery; any mechanical means for the conversion or control of motion, or the transmission or control of power.

As nouns the difference between lectures and seminars

is that lectures is while seminars is .

As a verb lectures

is (lecture).

As a verb spoil

is to strip (someone who has been killed or defeated) of their arms or armour.

As a noun spoil

is (Also in plural: spoils) Plunder taken from an enemy or victim.

As an initialism HM is

his Majesty, the title of a king.

In countable terms the difference between ability and ableness

is that ability is a skill or competence in doing; mental power; talent; aptitude while ableness is the state of being able.

As nouns the difference between ability and ableness

is that ability is suitableness while ableness is ability of body or mind; power; force; vigor.

As adjectives the difference between wealthy and worthwhile

is that wealthy is possessing financial wealth; rich while worthwhile is good and important enough to spend time, effort, or money on.

As a noun wealthy

is (uncountable|preceded by the)   rich people.