The following examples are clearly wrong: × I am very much tired × She is very much clever But the following sounds fine (at least according to OALD): I am very much afraid that ... I am ...
I am a member of a Toastmaster club in the Czech republic where people work on their public speaking skills. It is a usual to open a speech by Dear fellow Toastmasters, dear guests,... It is a ...
These words have subtle distinctions in related research fields, but even there are often considered interchangeable or just an matter of tradition/trendiness in a particular field. Since I am a bit ...