Study

-ion nouns

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to introduce

introduction

to register

registration

to react

reaction

to connect

connection

to decide

decision

to invent

invention

to educate

education

to prepare

preparation

to express

expression

to act

action

to explain

explanation

to inspire

inspiration

to select

selection

to permit

permiton

to define

definition

to recommend

recommendation

to discuss

discussion

to concentrate

concentration

to motivate

motivation