More like "strange" and "stranger" than your "strange" and "strangle"!!!! See the etymology at UltraWeb's online dictionary, and I quote:
'stranger n. strangers < 'strAnj&r > : 1. Anyone who does not belong in the environment in which they are found; SYN: alien, unknown. [ETYM: Old Fren. estrangier, French étranger. Related to Strange.]'
I rest my case. There's no punning around with you!
"There's no punning around with you!"
Aie! Your citation of the dictionary is pun-ishment indeed!