Diwali spiritually signifies the victory of light over darkness.
An endangered language is a language that it is at risk of falling out of use , generally because it has few surviving speakers .. endangered language. endangered language. language. language. If it loses all of its native speakers , it becomes an extinct language .. language. language. extinct language. extinct language. UNESCO defines four levels of language endangerment between `` safe '' -LRB- not endangered -RRB- and `` extinct ''  :. language. language. UNESCO. UNESCO. four levels of language endangerment. Endangered language#UNESCO definitions. Vulnerable. Definitely endangered. Severely endangered. Critically endangered