Concern is a related term of observance.

As nouns the difference between concern and observance

is that concern is that which affects one's welfare or happiness while observance is the practice of complying with a law, custom, command or rule.

As a verb concern

is (label) to relate or belong to; to have reference to or connection with; to affect the interest of; to be of importance to.

Portrait is a related term of acting.

As nouns the difference between portrait and acting

is that portrait is while acting is an intended action or deed.

As an adjective acting is

temporarily]] assuming the [[duty|duties or authority of another person when they are unable to do their job.

As a verb acting is

.

As adjectives the difference between potent and puissant

is that potent is possessing strength while puissant is powerful, mighty, having authority.

As a noun potent

is a heraldic fur formed by a regular tessellation of blue and white T shapes.

As verbs the difference between bawl and shriek

is that bawl is to shout or utter in a loud and intense manner while shriek is to utter a loud, sharp, shrill sound or cry, as do some birds and beasts; to scream, as in a sudden fright, in horror or anguish.

As a noun shriek is

a sharp, shrill outcry or scream; a shrill wild cry such as is caused by sudden or extreme terror, pain, or the like.

Noble is a related term of humanitarian.

As a proper noun noble

is .

As an adjective humanitarian is

concerned with people's welfare, and the alleviation of suffering; humane or compassionate.

As a noun humanitarian is

a person with such concerns; a philanthropist or do-gooder.

Faction is a related term of combine.

As a noun faction

is a group of people, especially within a political organization, which expresses a shared belief or opinion different from people who are not part of the group or faction can be a form of literature, film etc, that treats real people or events as if they were fiction; a mix of fact and fiction.

As a proper noun combine is

(colloquial) london underground.

Collection is a related term of flock.

In obsolete|lang=en terms the difference between collection and flock

is that collection is (obsolete) the act of inferring or concluding from premises or observed facts; also, that which is inferred while flock is (obsolete) to flock to; to crowd.

As nouns the difference between collection and flock

is that collection is a set of items or amount of material procured or gathered together while flock is a large number of birds, especially those gathered together for the purpose of migration or flock can be coarse tufts of wool or cotton used in bedding.

As a verb flock is

to congregate in or head towards a place in large numbers or flock can be to coat a surface with dense fibers or particles.

In transitive terms the difference between polish and abrade

is that polish is to refine; to wear off the rudeness, coarseness, or rusticity of; to make elegant and polite while abrade is obsolete spelling of lang=en.

In intransitive terms the difference between polish and abrade

is that polish is to become smooth, as from friction; to receive a gloss; to take a smooth and glossy surface while abrade is to undergo abrasion.

As an adjective Polish

is of, from or native to Poland, or relating to the Polish language.

As a proper noun Polish

is the language spoken in Poland.

As a noun polish

is a substance used to polish.

Impulsive is a related term of flighty.

As adjectives the difference between impulsive and flighty

is that impulsive is having the power of driving or impelling; giving an impulse; moving; impellent while flighty is given to unplanned and silly ideas or actions.

As a noun impulsive

is that which impels or gives an impulse; an impelling agent.

Authorisation is a related term of office.

As nouns the difference between authorisation and office

is that authorisation is while office is a building or room where clerical or professional duties are performed.