My question: Yes / no, is the following a verifiable fact?
"While there may be overlap between the two genres, sci-fi and Fantasy are considered distinctive types of fiction."
Please think gradually:
Because science fiction tends to be more grounded, and tries to build worlds based around reality; fantasy is more imaginative, and doesn't limit itself to whether something is plausible or not, which is an example of why the two genres are considered different.
Thus, the answer is yes.