Yes its symbolic to Lucifer.
Iconography is a term for visual imagery with symbolic implications.
Simply by doing evil things. I consider "selling your soul to the devil" as symbolic for doing any evil things (things that harm others, mainly), with the hope of getting a short-term benefit. Because, if you do that, you may indeed get a short-term benefit - but at the same time, you are harming your soul, and this may very well have negative effects in the afterlife.
Eucharist
aesthetics
William Churchill coined the term iron curtain as the symbolic border between Democratic Europe and Communism.
You do not worship the Devil. Long term good cannot come of it.
"Devil's bones" is a colloquial term for dice, due to their association with gambling and luck. It is a reference to the popular perception that gambling is sinful or devilish.
The term for rain that freezes when it hits the earth's surface is freezing rain.
a slang term for the devil or satin.
No. This term is used to describe their often aggressive behavior.
Devil's food is a term used by bakers to describe any chocolate pastry or cake. The part of the term "dogs" is the analogy towards hot dogs. Hence the name "Devil Dogs".
Iron Curtain