고추 should be specified as a chili pepper. 후추 is what people usually think of as (black) pepper.
These are the kind of comments I like!!! Thanks!
Thanks for clarifying. I just learned 후추 for pepper on another site and was wondering if I was taught wrong.
Fair warning: this is also a slang term for a male's...well, nether regions. The things you learn from TV nowadays...
Everyone should be careful using this word in Korea