SYNONYM
* SYNONYM ( "newname" "oldname" -- )

make an name-alias for a word - this is very different from a DEFER
since a DEFER will resolve at runtime. Changing the target of a
DEFER via IS will result in changing the BEHAVIOR of all
words defined earlier and containing the name of the DEFER.

A SYNONYM however does not have any data field (theoretically not
even an execution token), instead it gets resolved at compile time.
In theory, you can try to FIND the name of the SYNONYM but as
soon as you apply NAME> the execution token of the end-point is
returned. This has also the effect that using the inverse >NAME
operation will result in the name-token of the other name.
   SYNONYM CREATE  @ ;
   SEE FOO
   : foo  @ ;
   SYNONYM CREATE CREATE:
   : BAR CREATE 10 ALLOT ;
   SEE BAR
   : bar create: 10 allot ;
(only LINK> does not care about SYNONYMs)

FORTH/EXTENSIONS header defining primitive