A number of things or persons being in some relation to one another.
A column in the periodic table of chemical elements.
An element of an espresso machine from which hot water pours into the portafilter.
A (usually small) group of people who perform music together.
An air force formation.
A number of users with the same rights with respect to accession, modification, and execution of files, computers and peripherals.
A subset of a culture or of a society.
A functional group.
A small number (up to about fifty) of galaxies that are near each other.
A collection of formations or rock strata.
A number of eighth, sixteenth, etc., notes joined at the stems; sometimes rather indefinitely applied to any ornament made up of a few short notes.
A set with an associative binary operation, under which there exists an identity element, and such that each element has an inverse.
A commercial organization.
A set of teams playing each other in the same division, while not during the same period playing any teams that belong to other sets in the division.
To come together to form a group.
To put together to form a group.
The act or condition of two or more people being separated from one another.
Departure from active duty, while not necessarily leaving the service entirely.
An agreement legalizing such an arrangement.
An object that separates two spaces.
The act of disuniting two or more things, or the condition of being separated.
The place at which a division occurs.
An interval, gap or space that separates things or people.
The act or condition of a married couple living in separate homes while remaining legally married.