truism

As nouns the difference between commonplace and truism

is that commonplace is a platitude or while truism is a self-evident or obvious truth.

As an adjective commonplace

is ordinary; having no remarkable characteristics.

As a verb commonplace

is to make a commonplace book.

As nouns the difference between truism and tautology

is that truism is a self-evident or obvious truth while tautology is (uncountable) redundant use of words.

Apothegm is a related term of truism.

As nouns the difference between apothegm and truism

is that apothegm is a short, witty, instructive saying; an aphorism or maxim while truism is a self-evident or obvious truth.

As nouns the difference between terrorist and truism

is that terrorist is terrorist while truism is a self-evident or obvious truth.

As an adjective spurious

is false, not authentic, not genuine.

As a noun truism is

a self-evident or obvious truth.

As nouns the difference between ring and truism

is that ring is ring (a place where some sports take place; as, a boxing ring) while truism is a self-evident or obvious truth.

As nouns the difference between apophthegm and truism

is that apophthegm is an alternative spelling of lang=en while truism is a self-evident or obvious truth.

As nouns the difference between truism and belief

is that truism is a self-evident or obvious truth while belief is mental acceptance of a claim as likely true.

As a noun truism

is a self-evident or obvious truth.

As an adjective principal is

principal, main.

As nouns the difference between truism and slogan

is that truism is a self-evident or obvious truth while slogan is slogan (phrase associated with a product, used in advertising).