Old-fashioned and Primaeval

Old-fashioned adjective - Pleasantly reminiscent of an earlier time.

Primaeval and old-fashioned are semantically related. In some cases you can use "Primaeval" instead an adjective phrase "Old-fashioned".

Primaeval adjective - Having existed from the beginning; in an earliest or original stage or state.

Old-fashioned and primaeval are semantically related. Sometimes you can use "Old-fashioned" instead an adjective "Primaeval".