Nonquoted identifiers cannot be Oracle Database reserved words

jw> create table x (date date);
create table x (date date)
                *
ERROR at line 1:
ORA-00904: : invalid identifier

jw> create table x (timestamp timestamp);

Table created.

jw> select keyword,reserved from v$reserved_words where keyword in ('DATE','TIMESTAMP');

KEYWORD                        R
------------------------------ -
TIMESTAMP                      N
DATE                           Y

but why would DATE be reserved and TIMESTAMP not?

RESERVED WORDS (SQL)
--------------------

SQL Reserved Words have special meaning in SQL, and may not be used for
identifier names unless enclosed in "quotes".

An asterisk (*) indicates words are also ANSI Reserved Words.

RESERVED WORDS (PL/SQL)
-----------------------

PL/SQL Reserved Words have special meaning in PL/SQL, and may not be used
for identifier names (unless enclosed in "quotes").

An asterisk (*) indicates words are also SQL Reserved Words.

SQL> create table john_watson (date date);
create table john_watson (date date)
                          *
ERROR at line 1:
ORA-00904: : invalid identifier


SQL> create table john_watson ("date" date);

Table created.

SQL> desc john_watson
 Name                                      Null?    Type
 ----------------------------------------- -------- ----------
 date                                               DATE

SQL>

I like to see a reason for everything

Sussed! Thanks, Sriram. In some ways, my brain is too structured: I like to see a reason for everything.

why would DATE be reserved and TIMESTAMP not?

Reserved Words have special meaning in SQL (or) PL/SQL, and may not be used
for identifier names

Which context?
Why DATE can't be used and TIMESTAMP can? Is this not the question?

Regards
Michel

Oracle SQL is a superset of
the American National Standards Institute (ANSI) and the International Standards.

PL/SQL, Oracle's procedural extension of SQL, is an advanced fourth-generation
programming language (4GL).

And here the question is Why DATE a SQL reserved word TIMESTAMP Not?
answer is DATE is an ANSI standard where as TIMESTAMP not.