As a noun commonality

is the common people; the commonalty.

As an adverb communally is

affecting, by, or on behalf of, a community or group of people.

As nouns the difference between niggle and needle

is that niggle is a minor complaint or problem while needle is a long, thin, sharp implement usually for piercing such as sewing, or knitting, acupuncture, tattooing, body piercing, medical injections etc.

As verbs the difference between niggle and needle

is that niggle is to trifle with; to deceive; to mock while needle is to pierce with a needle, especially for sewing or acupuncture.

As nouns the difference between elephant and elephants

is that elephant is elephant while elephants is .

As verbs the difference between improved and soared

is that improved is (improve) while soared is (soar).

As an adjective improved

is that has been made better; enhanced.

As verbs the difference between improved and increase

is that improved is (improve) while increase is (of a quantity) to become larger.

As an adjective improved

is that has been made better; enhanced.

As a noun increase is

an amount by which a quantity is increased.

As adverbs the difference between instantly and continuously

is that instantly is urgently; with insistence while continuously is without pause.

In transitive terms the difference between help and teach

is that help is to avoid; to prevent; to refrain from; to restrain (oneself). Usually used in nonassertive contexts with can while teach is to cause to learn or understand.

In intransitive terms the difference between help and teach

is that help is to provide assistance while teach is to pass on knowledge, especially as one's profession; to act as a teacher.

As a proper noun Teach is

nickname for a teacher.

As verbs the difference between posit and impose

is that posit is assume the existence of; to postulate while impose is .

As a noun posit

is something that is posited; a postulate.

As verbs the difference between help and supervise

is that help is to provide assistance to (someone or something) while supervise is .

As a noun help

is (uncountable) action given to provide assistance; aid.

As adjectives the difference between sanguine and firm

is that sanguine is having the colour of blood; red while firm is steadfast, secure, hard (in position).

As nouns the difference between sanguine and firm

is that sanguine is blood colour; red while firm is (uk|business) a business partnership; the name under which it trades.

As verbs the difference between sanguine and firm

is that sanguine is to stain with blood; to impart the colour of blood to; to ensanguine while firm is to make firm or strong; fix securely.