Phenaphen and Pain pill

Phenaphen noun - An analgesic for mild pain but not for inflammation; also used as an antipyretic; (Datril, Tylenol, Panadol, Phenaphen, Tempra, and Anacin III are trademarks of brands of acetaminophen tablets).

Pain pill and Phenaphen are semantically related. In some cases you can use "Pain pill" instead a noun "Phenaphen".

Pain pill noun - A medicine used to relieve pain.

Phenaphen and pain pill are semantically related. Sometimes you can replace term "Phenaphen" with "Pain pill", this terms are similar.