Understanding fonts and typefaces

What is the difference between a font-family and a typeface?
Is comic sans really an ugly font?
How does one define/gauge/comment that a particular font is bad and good?
Every typeface has a particular emotion. Is there any other way to feel the mood of that typeface?
A lot of times, in a given context of a word or typography, 2 letters are mathematically equidistant but they feel to be visually off. Why does that happen? What is the way to correct them?
What are the challenges of designing a font for Indian scripts?
Why do we always have these serif and san-serif font pairs?
Any suggestions to spread the importance of Typography, especially to designers so they get inspired to design fonts and typefaces for the Indian context?

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