Methamphetamine hydrochloride and Upper

Methamphetamine hydrochloride noun - An amphetamine derivative (trade name Methedrine) used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant.

Upper and methamphetamine hydrochloride are semantically related. In some cases you can use "Upper" instead a noun phrase "Methamphetamine hydrochloride".

Upper noun - The higher of two berths.

Methamphetamine hydrochloride and upper are semantically related. Sometimes you can replace phrase "Methamphetamine hydrochloride" with "Upper", this terms are similar.