What's the difference between theriac and theriaca?

Theriac

Definition:

• (n.) Alt. of Theriaca
• (a.) Alt. of Theriacal

Example Sentences:

Theriaca

Definition:

• (n.) An ancient composition esteemed efficacious against the effects of poison; especially, a certain compound of sixty-four drugs, prepared, pulverized, and reduced by means of honey to an electuary; -- called also theriaca Andromachi, and Venice treacle.
• (n.) Treacle; molasses.

Example Sentences:

• (1) Between 1880 and 1930, we may assert that cocaine had taken the place of the universal panacea of the Middle Ages, the Theriaca.