sameness

nouns

the quality of being alike

"sameness of purpose kept them together"

sameness

is derived from

same

antonym

difference

is a type of (narrower)

an essential and distinguishing attribute of something or someone

"the quality of mercy is not strained"--Shakespeare

quality

is an attribute of

closely similar or comparable in kind or quality or quantity or degree

"curtains the same color as the walls"; "two girls of the same age"; "mother and son have the same blue eyes"; "animals of the same species"; "the same rules as before"; "two boxes having the same dimensions"; "the same day next year"

same

the quality of wearisome constancy, routine, and lack of variety

"he had never grown accustomed to the monotony of his work"; "he was sick of the humdrum of his fellow prisoners"; "he hated the sameness of the food the college served"

humdrum, monotony, sameness

is derived from

same