Difference between Four and Quadruplet

Four

Part of speech: numeral

Definition: The number after three and before five; 4; one plus three; two plus two; two times two. The typical number of fingers, other than the thumb, on one hand. This many: ••••. Describing a set or group with four components.

Part of speech: noun

Definition: The digit or figure 4; an occurrence thereof. Anything measuring four units, as length. A person who is fours years old. A score of 4 runs. Quadruple sculls

Example sentence: I like Kit-Kat, unless I'm with four or more people.

Quadruplet

Part of speech: noun

Definition: One of a group of four babies born from the same mother during the same birth, (i.e. one of four twins).