Vendors vs. Accounts

Vendors vs. Accounts

Can someone help me understand Vendors vs. Accounts?

It seems that to add a Contact person for a Vendor (i.e. the point of contact at Vendor that my company actually deals with) I have to also create an Account for that Vendor. This doesn't make sense to me. Why would I want my Vendors to also be Accounts? I thought Accounts were companies that I was selling to. I wouldn't want my Vendors to also be Accounts as this will muddy up my database needlessly, but I want Contacts to be associated with my Vendors so my employees can keep track of who they're dealing with.

Clarification would help! Thanks!