As nouns the difference between simultaneity and parallelism

is that simultaneity is the quality or state of being simultaneous; simultaneousness while parallelism is the state or condition of being parallel; agreement in direction, tendency, or character.

As nouns the difference between fun and fu

is that fun is amusement, enjoyment or pleasure while fu is flux unit.

As an adjective fun

is enjoyable, amusing.

As a verb fun

is to tease, kid, poke fun at, make fun of.

As an interjection fu is

fuck you.

As a proper noun Fu is

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As an initialism FU is

follow-up.

As nouns the difference between blabbermouth and bigmouth

is that blabbermouth is a gossip while bigmouth is one who talks too much or says things which should not be said.

As nouns the difference between transgression and aggression

is that transgression is a violation of a law, command or duty while aggression is aggression.

As adverbs the difference between earnestly and truly

is that earnestly is in an earnest manner; being very sincere; putting forth genuine effort while truly is in accordance with the facts; truthfully, accurately.

As nouns the difference between insight and relevance

is that insight is a sight or view of the interior of anything; a deep inspection or view; introspection; frequently used with into while relevance is the property or state of being relevant or pertinent.

As adjectives the difference between insightful and salient

is that insightful is possessing insight while salient is worthy of note; pertinent or relevant.

As a noun salient is

(military) an outwardly projecting part of a fortification, trench system, or line of defense.

As a verb lie

is .

As an adjective untruthful is

not giving the truth; providing untrue facts; lying.

As nouns the difference between genocide and suicide

is that genocide is the systematic killing of substantial numbers of people on the basis of their ethnicity, religion, political beliefs, social status, or other particularities while suicide is intentional killing of oneself.

As verbs the difference between genocide and suicide

is that genocide is to commit genocide (against); to eliminate (a group of people) completely while suicide is to kill oneself intentionally.

As a noun confidence

is passive self-assurance.

As an adjective vigorous is

physically strong and active.