Overdue= (1) (of payment) past due; being unpaid by the assigned date or at the scheduled time: ‘The electric bill was two months overdue.’ ‘An overdue installment’

Be/become overdue is used of payments, library books, video films that you have rented etc.: ‘Even if the books are only one day overdue, you still have to pay a fine.’

Expire is used of a license, contract, membership card, etc.: ‘I wanted to pay by visa, but my card has expired.’ ‘I suddenly realized that my driving license had expired.’

Outdoor (WITHOUT s) is an adjective. Outdoor = located, suited for, or taking place in the open air: ‘He enjoys the outdoor life.’ ‘There are many outdoor activities in and around Coimbra.’

Outdoors (WITH s) is an adverb. Outdoors = outside a building: ‘He likes to work outdoors.’

Outside = when you mean ‘away from’, use (get/go) out of (NOT outside): ‘It does you good to get out of the city now and again.’ ‘Without a passport, he would never have been able to get out of the country.’

In British English, outside is not used with of: ‘You aren’t allowed to park outside the bank.’

In American English, both outside and outside of are used.

Originate = (1) come into existence; take on form or shape: ‘The practice of Sati originated during ancient Ages.’ (2) to give rise to; initiate: ‘The policy was originated by the previous administration.’ (3) to create something new: ‘Darwin originated the theory of evolution.’

Originate is used in connection with things, ideas, customs etc. (NOT people): ‘No one really knows how the solar system originated.’

If you are born in and/or grow up in a particular place, town, country etc., you come from that place: ‘Where does Agneta come from- Sweden or Norway?’

Words that enter a language from other languages come from (or are derived from) those languages: ‘The name ‘terrier’ comes from the Latin word ‘terra’ meaning ‘the earth’.’

Oral = (1) using speech rather than writing: ‘Always go for a written agreement in business than relying on an oral agreement.’ ‘In the oral examination, she was asked to recite the name of all presidents.’ (2)  of or relating to mouth: ‘He has undergone an oral surgery.’ ‘She practices good oral hygiene by brushing her teeth at least twice a day.’

Both the words Spoken and Oral can be used to refer to language skills and the communication of information. However, oral is slightly more technical than spoken. The use of oral to mean ‘spoken’ is restricted to certain technical phrases used in education: ‘Oral skills’, ‘An oral examination’.

Use opposite and the opposite of only when you mean that two things are altogether different in nature, quality, or significance: ‘I thought that the medicine would make him sleepy, but it had the opposite effect.’ ‘The opposite of long is short.’ ‘The two men went off in opposite directions.’ (= one went to the left and one to the right)

To describe people’s opinions, life styles, ways of thinking etc., the usual word is different: ‘These two schools of thought are completely different.’

One thing is opposite another thing (WITHOUT to/of): ‘The nearest bus stop is opposite the bank.’

When opposite means ‘facing the speaker or the person/place being talked about’, ‘it comes immediately after the noun: ‘The house opposite is also for sale.’