serial killer [seer-uh-eel-kil-er]
noun
1. a person who carries out a series of murders.
homophone [hom-uh-fohn]
noun
1.
Phonetics. A word pronounced the same way as another but differing in meaning, whether spelled the same way or not.
EX. I thought you said "cereal killer" not "serial killer". Stupid homophones.