ela volcab septemper

fluent

Being able to speak a language easy

lecture

a formal talk given to a grup of people

Linguist -

A person that studies languages

forbid

order someone to do something

Supplement

Its something extra added to improve it

Seldom -

Not often

endangered

A thing that is at high risk of dyeing out

diversity

the condition of being different

critical

extremely important

setback

delay , hinder