reserved word 
noun Computing
A word in a programming language which has a fixed meaning and cannot be redefined by the programmer.Well, in addition to scanning for offensive strings, some names contain reserved words, or keywords goes the theory....
- It's common to reuse components, so once found, they're saved as handy property values on the klass object-class is a reserved word in JavaScript.
- If we don't want this behavior, we can make a variable local to a function by preceding it with the reserved word typeset.
- idempotent
- idem sonans
- ident
- identical
- identicality
- identically
- identicalness
- identical twin
- identifiability
- identifiable
- identifiably
- identifical
- identifically
- identification
- identificational
- identification beacon
- identification disc
- identification disk
- identification panel
- identification parade
- identification plate
- identification tag
- identification technology
- identificatory
- identifier