worth
Worth can be a preposition or a noun.
used as a preposition
If something is worth an amount of money, that is the amount you would get for it if you sold it.
His yacht is worth $1.7 million.
They own a two-bedroom house worth £350,000.
Be careful
Worth is not a verb. Don't say ‘His yacht worths $1.7 million’.
Worth is not a verb. Don't say ‘His yacht worths $1.7 million’.
used as a noun
You use worth as a noun after words like pounds or dollars to show how much money you would get for an amount of something if you sold it.
I can't believe we're arguing over fifty pence worth of chocolate.
Twelve million pounds worth of gold and jewels were stolen.
Don't talk about the ‘worth’ of something that someone owns. Don't say, for example, ‘The worth of his house has greatly increased’. You say ‘The value of his house has greatly increased’.
What will happen to the value of my car?
The value of the land is now over £1 million.