Antediluvian and Oldtimer

Antediluvian noun - A person with old-fashioned ideas.

Oldtimer and antediluvian are semantically related. In some cases you can replace term "Oldtimer" with "Antediluvian", this nouns are similar.

Oldtimer noun - An experienced person who has been through many battles; someone who has given long service.

Antediluvian and oldtimer are semantically related. Sometimes you can use "Antediluvian" instead a noun "Oldtimer".