Can we use "commiseration" and "condolence" interchangeably?

Question

On what occasions can we use these terms and are they perfect synonym for each other to use interchangeably? Can we say to someone who has lost a friend "our commiseration to ..."?

Answer 1

In this case, they are not the same thing.

'To commiserate' means you share someone's grief ( a noun form is rare).

'Condolences' means you feel bad for someone ( verb form is rare).

If you needed more clarity,

in general we don't say " we give our commiseration to you'. The more normal thing is to give or offer someone your condolences.