keräelmä

Noun

 * 1) An unorganized, limited or non-representative collection of related things.

Usage notes

 * A more organized or extensive collection would be called, although there's no clear distinction. Actually, most speakers make no distinction at all, and use the term of both.  gets about 1,500 times as many hits in a Google search as  (August 2013).
 * The Finnish Literature Society defines for their archiving purposes as: