obsequy - nothing to do with obsequiousness.
Apparently not entirely true - both referring to compliance.
(Who is more compliant, in a non-physical way, than a dead person?)

sextet - nothing to do with sex.
Adam and Eve were created on the sixth day, the possibilities for sex without two partners notwithstanding.

etc.

Which leaves me to wonder about the rest of Anu's "unrelated" words. Anyone know?
My faith in Anu lies broken upon the rocks. (Or is it my "confidence?" Don't answer.)