As nouns the difference between assertion and hostility

is that assertion is the act of asserting, or that which is asserted; positive declaration or averment; affirmation; statement asserted; position advanced while hostility is the state of being hostile.

Superficial is a synonym of materialistic.

As adjectives the difference between materialistic and superficial

is that materialistic is being overly concerned with material possessions and wealth while superficial is shallow, lacking substance.

As a noun superficial is

a surface detail.

Foampad is likely misspelled.

Foampad has no English definition.

As a noun sponge is

any of various marine invertebrates, mostly of the phylum Porifera, that have a porous skeleton often of silica.

As a verb sponge is

to take advantage of the kindness of others.

As nouns the difference between eugenics and euphenics

is that eugenics is the science of improving stock, whether human or animal while euphenics is the science of making biological (phenotypic) improvements to humans after birth.

As a noun humanism

is the study of the humanities or the liberal arts; literary (especially classical) scholarship.

As an adjective humane is

having or showing concern for the pain or suffering of another; compassionate.

As a noun facts

is .

As an adjective principal is

principal, main.

As nouns the difference between keepers and promoters

is that keepers is plural of lang=en while promoters is plural of promoter.

As nouns the difference between society and club

is that society is a long-standing group of people sharing cultural aspects such as language, dress, norms of behavior and artistic forms while club is a heavy stick intended for use as a weapon or plaything^Wp.

As a verb club is

to hit with a club.

As adjectives the difference between relieved and grateful

is that relieved is experiencing or exhibiting relief while grateful is showing appreciation, being thankful.

As a verb relieved

is past tense of relieve.

As adjectives the difference between sifted and vetted

is that sifted is having been sifted while vetted is of or pertaining to an investigation, especially one that has been completed.

As verbs the difference between sifted and vetted

is that sifted is (sift) while vetted is (vet).