Plus
Part of speech: preposition
Definition: increased by with; having in addition
Part of speech: noun
Definition: A positive quantity. An asset or useful addition. A plus sign: +.
Part of speech: conjunction
Definition: and also; in addition
Part of speech: adjective
Definition: Being positive rather than negative or zero. Positive, or involving advantage. Electrically positive.
Example sentence: In the arithmetic of love, one plus one equals everything, and two minus one equals nothing.
Nonnegative
Part of speech: adjective
Definition: (of a quantity) Not negative; either zero or positive