I'm unable to find a precise classification and/or similarity between the two words - debt and loan. Should we consider debts (where people are helped financially or in a way they want that help - and they need to pay it off either in instalments or at a go, be it through paper money or by any other means according to the agreement) as loans OR Is there anything that could help us classify both these terms and show some dissimilarities and differences between them?
I guess that debt is just a term used to describe the overall net level of one's finances, while loans are describing individual deals or contracts that are being made which result debt/credit.
A loan obviously constitutes as debt to the party who is actively taking out the loan agreement, and I don't really think that there is going to be that much of a technical difference in some scenarios where you could use both terms interchangeably. Every single debt is technically incurred through one form of a loan or another, what varies is just the terms and length.
Don't think that you can say that loans are a part of debt though. Loans are a form of debt, but not a part of it.