A group of people doing something together.
To put something together, or to bring a group of people together for some purpose.
Well technically they don't celebrate birthdays, they celebrate as we would say "stepping up". In assembly the group a group of the babies born in a certain year all technically grow a year older together. All babies born in a certain year are all in the same group. So they technically don't celebrate getting older, they celebrate going a group higher.
trinitarian
Christians are the only group that celebrates the holiday being that it was the day that their "savior" was born.
a group of people who get together for something.
Basically an organization is a group of people who work together on something. (if your talking about business.)
a law makin group of government
Every group of people on the Earth celebrate harvests, and all for similar reasons. Harvests are life and sustenance.
Grace Baptists (England)
It expresses how difficult it is to handle a group of people who all want to do something different. Or, more generally, it means that something is difficult, and perhaps a bit chaotic.
A caravan is a group of people traveling together.