Misc: Where did the celts believe dead heroes went?

Questions

[General knowledge] in the american sitcom "frasier" what is frazier cranes brother called?

[General knowledge] in us military slang what does "charley" mean?

[General knowledge] what does a laxicographer do?

[General knowledge] who played opposite dustin hoffman in 'the graduate'?

[General knowledge] beta blockers stop the secretion of what chemical?