Why are most of keywords in V$RESERVED_WORDS not actually reserved?

Hello, Could you please clarify the meaning of the view V$RESERVED_WORDS and especially its contents? At first glance, the documentation has a clear explanation. The view contains reserved words, and columns RESERVED, RES_TYPE, RES_ATTR, and RES_SEMI describe, for which purposes these words can or cannot be used. But more than 90% of words are not actually reserved. In my case (Oracle Database 19c) the view contains 2491 words, and 2361 of them have value 'N' in all columns. Even if we exclude duplicates, it is still 2339 words: <code>select count(*) from v$reserved_words where reserved = 'N' and res_type = 'N' and res_attr = 'N' and res_semi = 'N' and duplicate = 'N' ; COUNT(*) ---------- 2339</code> What is the risk of using these words as object names or as variables in PL/SQL?