sleeping tablet vs sleeping pill

sleeping tablet and sleeping pill both are nouns.

Word	Noun	Adjective	Verb	Adverb
sleeping tablet	Yes	No	No	No
sleeping pill	Yes	No	No	No

As nouns, sleeping tablet and sleeping pill are synonyms defined as:

sleeping tablet and sleeping pill: a soporific drug in the form of a pill (or tablet or capsule)

Other synonyms of sleeping tablet include sleeping capsule, sleeping draught.

sleeping tablet (noun)	sleeping pill (noun)
a soporific drug in the form of a pill (or tablet or capsule)	a soporific drug in the form of a pill (or tablet or capsule)