What is the difference between the spellings Occam’s razor and Ockham’s razor?

The spellings Occam’s razor and Ockham’s razor are interchangeable variations referring to the same philosophical principle of parsimony. This principle, which suggests that the simplest explanation is usually the best, is attributed to the 14th-century English philosopher William of Ockham.123

There is no functional difference between the two terms; they are simply different ways of transcribing the philosopher's name. While "Occam’s razor" is the more common spelling, "Ockham’s razor" is a recognized and valid variant. Both forms are used to describe the same law of parsimony, which holds that entities should not be multiplied beyond necessity.1245