Definition:
Anthropomorphism can be understood to be the act of lending a human quality, emotion or ambition to a non-human object or being. This act of lending a human element to a non-human subject is often employed in order to endear the latter to the readers or audience and increase the level of relativity between the two while also lending character to the subject.
Example:
The raging storm brought with it howling winds and fierce lightning as the residents of the village looked up at the angry skies in alarm.
Personification is the ascribing of LIVING characteristics to non-living objects (i.e. The stapler jumped out of my hand)
Anthropomorphism is the ascribing of HUMAN characteristics to non-human objects or beings (includes animals).
Pathetic Fallacy is the ascribing of the MAIN CHARACTER’S emotions to the surroundings. (Usually the weather and nature)
[My English teacher got a little too enthusiastic while describing this and almost hit a student. Her colleagues gave her a “Personification-safe stapler” for her birthday]