OK, let me try...
Religion is to me about dogma, being dogmatic, sticking to set rules that were put down by someone else and then called... canonical if the rules are set from up the hill (Vatican). Or like religiously brushing your teeth 3 time a day as set down my mom?
If set by some other 'authority' it may be called heretical, sectarian, un-believing, etc. etc.
Spirituality to me is about AWARENESS (inner awareness) of what's out there that is not immediately accessibly, by touch, vision, smell, etc. - but a lot by some 6th sense, or intuition. It is NOT at all bound to anything like dogma or defined by canon, standard, rule, norm, principle, tenet, law, list, or catalogue.
Some things can be intuitively bad, but looking at it more 'flat' they may seem just useful.
Spirituality is related to creativity and creativeness, religion to 'secured' believes and emotional security in doing what is deemed to be 'right or good' as opposed to be 'wrong or bad' and as lid out by ... standard, rule, norm, principle, tenet, law, list, or catalogue.
OK, as I said - just a try...
Axélle