Other / Shape
offshoot - Something that has developed from something larger that already existed
Bell Labs, an offshoot of the Bell Telephone company, was where the transistor, laser beams, and the UNIX operating system were invented.
tangent - A subject or activity that is a change in direction, and different than the one you had been doing.
The police tried to focus the only witness to the crime, but he kept going off on tangents about irrelevant topics.