Correct spelling, explanation: both fortunately and luckily are correct, and they can be used interchangeably in many contexts. They are adverbs that convey a sense of positive outcome or relief in a situation. The choice between them often comes down to personal preference or the rhythm of a sentence. In most cases, there is no significant difference in meaning between fortunately and luckily, and you can choose the one that fits your writing style or the context in which you are speaking.

Definition of fortunately:
Adverb, happening because of good luck
Fortunately, no one was injured in the car accident, despite the severity of the collision.
After a long search, they found their lost keys, and fortunately, it happened just before they were about to give up.

Collocations with fortunately:
Some most commonly used collocations include:
1. Fortunately for us: used to express gratitude or relief due to a favorable outcome.
Fortunately for us, the rain stopped just in time for the outdoor event.
2. Fortunately enough: indicates that there was enough luck or fortune involved in a situation.
We were fortunate enough to secure the last available tickets to the concert.
3. Fortunately, no one was hurt: describes a situation where there was a positive outcome in terms of safety or well-being.
Fortunately, no one was hurt in the minor car accident.
4. Fortunately, it turned out: implies a positive resolution or discovery in a situation.
Fortunately, it turned out that the missing document was just misplaced on the desk.

Correct spelling, explanation: fortunately and luckily are very similar in meaning and can often be used interchangeably. Both words convey a sense of positive outcome or relief in a given situation. However, there are subtle nuances in usage that might influence their appropriateness in certain contexts. Fortunately is generally considered more formal than luckily. In more formal or serious contexts, you might prefer the word fortunately. In conversational or everyday language, luckily might be more commonly used.