Correct spelling, explanation: the word return has a distinct etymology from turn, although they share some historical connections. The word return originates from Middle English returnen, which came from Old French retourner, ultimately derived from Latin re- (meaning back) and tornare (meaning to turn). So, etymologically, return has a connection to turn through its Latin root, but it has developed its own specific meaning over time. So, while there are historical connections between the etymologies of return and turn, they have diverged in meaning and usage, and each word now serves distinct purposes in the English language.

Definition of return:
1. Verb, come or go back to a place or person
After his vacation, he will return to work next Monday.
She promised to return the borrowed book to the library by the end of the week.
2. Noun, an act of coming or going back to a place or activity
The store offers a full refund on all returns within 30 days of purchase.
The traveler experienced a warm welcome upon his return to his hometown after years of absence.

Collocations with return:
Some most commonly used collocations include:
1. Return on Investment (ROI): the measure of profitability of an investment relative to its cost.
The company experienced a high return on investment for its marketing campaign.
2. Return policy: the set of rules and procedures regarding the process of returning purchased items for a refund, exchange, or credit.
The store has a generous return policy, allowing customers to return items within 60 days with a receipt.
3. Return ticket: a ticket for travel from one place to another and back again.
I booked a return ticket for my trip to New York, so I’ll be flying back home after a week.
4. Return address: the address of the sender of a letter or package, used for the purpose of returning undelivered mail.
Make sure to include a clear return address on the envelope so that it can be returned if undelivered.

Correct spelling, explanation: turn and return cannot be used interchangeably because they have distinct meanings and functions in language. However, there are some contexts where they may overlap or be used in similar ways. Both turn and return can involve some form of movement or change, whether it’s physical movement, change in direction, or change in condition. In certain contexts, both words may describe actions related to direction. While return specifically denotes going back to a previous place or condition, turn can also imply a change back to a previous state or condition in some contexts.