Betrayer noun – One who reveals confidential information in return for money. Source and betrayer are semantically related. In some cases you can use "Source" instead a noun "Betrayer". Nearby Words: betray, betrayal, betrayed, betraying
Source noun – A point or place at which something is invented or provided. Betrayer and source are semantically related. Sometimes you can use "Betrayer" instead a noun "Source".
Neverwinter Nights 2: Mask of the Betrayer has an interesting example in the Ashenwood, where the creature you're battling is the source of the flames (some sort of fire elemental that is stuck in place and has caused a forest fire).