Old folk and Oldtimer

Oldtimer and old folk are semantically related In some cases you can replace term "Oldtimer" with "Old folk", this terms are similar.

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

Old folk and oldtimer are semantically related in older person topic. Sometimes you can use "Old folk" instead a noun "Oldtimer", if it concerns topics such as senior.