Entity XXX will be ignored because it conflicts with Quartus II primitive name

That fact that it is reasonably named is why you are getting the conflict. Altera also seemed to feel it was reasonably named. And truly, the entity names you are choosing have been used as primitives in synthesis libraries for as long as I can remember.

There is a list of names that you cannot use in the Quartus Help files:

Look for help topic:

WYSIWYG Atom Names Unavailable for Use as Primitive Instance Names

In 9.1, it's located here:

file:///c:/altera/91/quartus/common/help/webhelp/master.htm#mergedProjects/quartus/gl_quartus_welcome.htm

I would recommend using an underscore in your names. (AND_2, OR_2, OR_3, OR_4).

Jake