Different metal type arrowheads provide different extra bonus damage to different monster:For example, silver is against undead, titanium is against giants, etc etc.Different feather types provide different type of damage:For example, owl feather does slashing, raven does bludgeon, stirge does negative energy.I hope this helps.
And in answer to your question, Dracogear, yes, the table applies to crossbow bolts as well.