Chloral hydrate and Sedative drug

Chloral hydrate noun - A colorless crystalline drug used as a sedative; irritates the stomach and can be addictive.

Sedative drug and chloral hydrate are semantically related. In some cases you can use "Sedative drug" instead a noun phrase "Chloral hydrate".

Sedative drug noun - A drug that reduces excitability and calms a person.

Chloral hydrate and sedative drug are semantically related. Sometimes you can replace phrase "Chloral hydrate" with "Sedative drug", this phrases are similar.