This is the -sion and -ssion suffixes
A suffix is a group of letters that go at the end of a word to give it meaning
These sounds are almost the same but they have a very slight different in sound
-sion has a faint /jz/ sound in it, but -ssion has a /sh/ sound in it
Synthetic Inquiry: How does -sion change the meaning of a word? How can we use this knowledge to expand our vocabulary?
Word Lists
-sion
collision
conclusion
confusion
corrosion
decision
division
erosion
exclusion
explosion
extension
inclusion
intrusion
invasion
occasion
persuasion
repulsion
revision
supervision
television
transfusion
-ssion
admission
aggression
depression
discussion
expression
impression
mission
oppression
passion
percussion
permission
possession
procession
profession
progression
session
succession
suppression