"coaster" is slang for a bad burn, i.e. a failed burn that created an usuable disk. (So all it's good for is a coaster.)
Not used in describing a firearm, but a term used in hunting, to denote the game being hunted.
if you mean the crossword, the answer is colonial
One derogatory term describing a lowlife is "scum."
The term describing the ability of a substance to eat or wear away materials is "corrosion."
a general slang term describing someone who's crazySomeone that's crazy. It comes from Schizophrenia.
The proper term describing the US economy after the depression is recovery. The economy went up from where it was.
Urban
Pneumonia is a medical term describing a lung infection.
The noun 'roller coaster' has no standard collective noun since most roller coasters are not in a group. However, a collective noun is an informal part of language. Any noun the fits the situation can function as a collective noun; for example, a scream of roller coasters, a maze of roller coasters, a park of roller coasters, a tour of roller coasters, etc.
A cartographer
The term brown note is used when describing a person losing control of their bowels due to sound waves transmitted through the air. This theory has yet to be proven.
T1 is a term used in describing MRI results to denote the signal that makes the more fatty areas bright.