The longest is the type of adjective called a superlative. Follow the link to find out more.

Here found is the past participle of the irregular verb find. Follow the link below to find out more and to listen to some examples.

Came is the past tense of the irregular verb come. Follow the link below to find out more and to listen to some examples.

Here sought is the past tense of the irregular verb seek. Follow the link below to find out more and to listen to some examples.

an approximate number; a rough figure