There are a number of preposition words that change the meaning of a phrase when used with a particular word. For example, you can use with Equivalent different prepositions, and you will get a different meaning every time. You can see the examples below:
1. Equivalent to
Equivalent to (money or thing)
One million is equivalnet to 10 lacs.
2. Equivalent for
Exchange for (word)
Example: Write a word equivalent for fear.