Study

-ion nouns

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to react

reaction

to concentrate

concentration

to inspire

inspiration

to express

expression

to decide

decision

to recommend

recommendation

to educate

education

to discuss

discussion

to select

selection

to prepare

preparation

to define

definition

to introduce

introduction

to act

action

to explain

explanation

to invent

invention

to motivate

motivation

to register

registration

to permit

permiton

to connect

connection