orphened file, unindexed file?

[fluidmotion]

I am on HP mini with win7 starter.
when i turned this on, window started disk check on C drive.
I read screen,
what is orphaned file and unindexed file?

 

[Ztruker]

An explanation of CHKDSK and the new /C and /I switches

An orphaned file is one for which a legitimate FRS exists, but which is not listed in any directory. When an orphaned file is found, it can often be restored to its rightful directory, provided that directory is still around. If the directory that should hold the file no longer exists, CHKDSK will create a directory in the root directory and place the file there. If directory listings are found that reference FRSs that are no longer in use or that are in use but do not correspond to the file listed in the directory, the directory entry is simply removed.

Can't find any definition for unindexed though.