მწვანე მინდორი

Usually, no. A city park is 'parki'. 'Mindori' implies a more natural, open space.

Not always, but it's the most common color associated with it. You could have a 'qviteli mindori' (yellow field) in autumn.

Use 'mindorshi' for being inside the space, or 'mindorze' for being on the surface of the grass.

'Veli' is often larger and flatter, like a valley floor. 'Mindori' is any open field.

It is neutral. You can use it in any situation.

No, adjectives in Georgian do not change for plural when they precede the noun.

No, for a field of study, use 'spero' (sphere) or 'dargi' (branch).

It is a sharp, 'spitting' sound made by building pressure behind the tongue.

Yes, 'mdelo' is specifically a meadow, but 'mindori' is used more broadly.

No, that is usually called a 'golfis moedani'.