variables, identifiers, keywords
error
- last time i used the term ‘identifier’ incorrectly
terminology
- identifier:
any sequence of characters that the read-phase treats as a single token
- keyword:
an identifier used to indicate a special form, eg. define, if
- variable:
an identifier that names a value
all identifiers that are not keywords are available for use as variables
- name:
SICP uses the word name informally as a synonym for variable