Puzzle 18

Extended study to increase knowledge.

Transparent tank for underwater creatures.

US slang for a coffee.

Brought in from abroad.

Study of shapes and angles.

Black tea with bergamot, named after past leader.

DC comic series critical of racism and violence.

Shakespeare play about a monarch and his daughters.

Valentine's Day is celebrated in this month.

Addictive chemical in cigarettes.

Polish or Russian headscarf.

Upper roof level at the rear of a ship.

Finland's capital.