Mossback and Oldtimer

Mossback noun - A person with old-fashioned ideas.

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

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

Mossback and oldtimer are semantically related in elderly person topic. You can use "Mossback" instead a noun "Oldtimer".