An alias can be defined for a user’s shell to have a single command take the place of several commands with options and arguments.
An argument is typically a file, directory, or other object that a command is being targeted to or is acting upon. See also option.
A buffer is a location in memory that contains data that has yet to be written to disk. For example, a new file that is unnamed and unsaved in
vi contains the text you type in a buffer. Buffer is also used to describe various locations in memory that hold data.
A build in software terms can be a particular version or set of software, such as “the January 98 build of Apache.” Or it can be used as a verb, meaning to compile and configure the software.