band:
(plural: ‘bands‘; for the right pronunciation, please click here)
Apart from other equally common meanings…
A group word for people or animals, e.g. ‘a band of outlaws’, ‘a band of supports’, ‘a band of horses’, etc.

a military band
a group of musicians;
a group of people formed for some common purpose and often with a leader,
a group of criminals, such as thieves or outlaws,
(in Canada) a group of organized community recognised by the government of Canada, also known as ‘First Nation’,

a band (of musicians)
e.g.
There is a new band (of musicians) playing at Anne’s birthday party this evening. Do you want to join us?
Once she established herself as a singer, she joined a pop band and became even more popular.
The President and his band (of supporters) are visiting every State to gather public opinion of the new healthcare law.
Compare: orchestra
To know the difference between a band and an orchestra, please click here.
