ion

ion is a one way letter, which means it can only be said one way shun.
That makes reading it a lot easier, doesn't it?

easy words with shun

mention
mission
question
division
bastion
mansion
portion

 other harder words

revolution
moderation
negotiation
speculation
inscription
foundation
relation
reaction
sensation
conversion
passion
lotion
friction
nation
fraction
station
quotation
flotation
traction
rotation
explanation
inspection
vacation
transition
fiction
reaction
cushion
salvation


 a poem with lots of ion(shun)

a mission
with a passion
is a vacation
sensation

says

the foundation
for moderation
on vacation