Subject: How does acetaminophen work differently from asprin to relieve pain?

Other than the anti-inflammatory effects and blood-thinning properties that 
asprin has (and tylenol doesn't), what are the differences in how the two drugs 
work to relieve pain?  I understand that asprin inhibits an enzyme, which then 
takes a number of compounds dirived from fatty acids and converts them to 
molecules that do work. And that the inhibition of this enzyme is what reduces 
swelling and causes blood thinning. Tylenol does not work this way? How do they 
differ in the way they block prostoglandins?

Re: How does acetaminophen work differently from asprin to relieve pain?