Correct spelling, explanation: enquire and inquire are often used interchangeably, but there is a subtle difference in their usage that depends on regional and contextual preferences. Enquire is more commonly used in British English. It means to ask a question or seek information. Inquire, on the other hand, is more common in American English. It also means to ask a question or seek information. In general, both words are correct, and the choice between them usually depends on your location and personal preference.

Definition of enquire:
verb, to ask for information, investigate
He decided to enquire about the cost of the tickets before making his travel plans.
Please feel free to enquire if you have any further questions or concerns regarding the event.

Collocations with enquire:
Some most commonly used collocations include:
1. Enquire about: this is the most common collocation and means to ask for information about something.
I need to enquire about the availability of hotel rooms.
2. Enquire into: this phrase is used when you want to investigate or look into a matter more deeply.
The committee will enquire into the allegations of misconduct.
3. Enquire after: this means to ask about someone’s well-being or to check on their health or situation.
I wanted to enquire after your mother to see how she’s doing.
4. Enquire within: this is often used in a business context and means to ask for information or inquire about something at a particular location or organization.
For job opportunities, please enquire within the company’s HR department.

Correct spelling, explanation: the primary difference between the two words is regional. Enquire is more commonly used in British English, while inquire is more commonly used in American English. In British English, both enquire and inquire are used, but enquire is the preferred spelling. In American English, inquire is more widely accepted, though enquire is understood. Some people perceive enquire as slightly more formal than inquire. Therefore, if you want to maintain a formal tone, you might choose enquire. However, this distinction is not always strict, and both words can be used formally or informally.