Distasteful is a related term of unwelcome.

As adjectives the difference between distasteful and unwelcome

is that distasteful is having a bad or foul taste while unwelcome is not welcome.

Unexpected is a related term of improper.

As adjectives the difference between unexpected and improper

is that unexpected is not expected, anticipated or foreseen while improper is unsuitable to needs or circumstances; inappropriate; inapt.

As a verb improper is

(obsolete|transitive) to appropriate; to limit.

Check is a related term of rule.

As verbs the difference between check and rule

is that check is to inspect; to examine while rule is .

As a noun check

is (chess) a situation in which the king is directly threatened by an opposing piece or check can be (textiles|usually|pluralized) a pattern made up of a grid of squares of alternating colors; a checkered pattern.

In graph theory terms the difference between size and degree

is that size is a number of edges in a graph while degree is the number of edges that a vertex takes part in; a valency.

As nouns the difference between size and degree

is that size is an assize while degree is a step on a set of stairs; the rung of a ladder.

As a verb size

is to adjust the size of; to make a certain size.

As nouns the difference between struggle and encounter

is that struggle is strife, contention, great effort while encounter is an unplanned or unexpected meeting.

As verbs the difference between struggle and encounter

is that struggle is to strive, to labour in difficulty, to fight (for or against), to contend while encounter is to meet (someone) or find (something) unexpectedly.

Address is a related term of converge.

As verbs the difference between address and converge

is that address is (obsolete) to prepare oneself while converge is .

As a noun address

is direction or superscription of a letter, or the name, title, and place of residence of the person addressed.

Sullied is a related term of vitiated.

As verbs the difference between sullied and vitiated

is that sullied is (sully) while vitiated is (vitiate).

As an adjective sullied

is defiled or tainted, soiled or stained.

Vital is a related term of powerful.

As adjectives the difference between vital and powerful

is that vital is relating to, or characteristic of life while powerful is having, or capable of exerting power, potency or influence.

Lustful is a related term of profligate.

As adjectives the difference between lustful and profligate

is that lustful is full of lust; driven by lust while profligate is (obsolete) overthrown, ruined.

As a noun profligate is

an abandoned person; one openly and shamelessly vicious; a dissolute person.

As a verb profligate is

(obsolete) to drive away; to overcome.

Status is a related term of distinction.

As nouns the difference between status and distinction

is that status is status while distinction is that which distinguishes; a single occurrence of a determining factor or feature, the fact of being divided; separation, discrimination.