The term "difference of" is commonly used in mathematics to refer to the result of subtracting one number from another. However, there are several other words and phrases that can be used to convey the same concept, depending on the context. Here are some alternatives:

1. Subtraction Result: This phrase directly refers to the outcome of a subtraction operation.
2. Remainder: In some contexts, especially when dealing with quantities or amounts, "remainder" can be used to describe what is left after subtraction.
3. Discrepancy: This term is often used to describe a difference between two values, especially when there is an unexpected or unexplained variance.
4. Gap: This word can be used to describe the difference between two numbers, particularly when emphasizing the space or distance between them.
5. Variance: In statistics and probability, "variance" refers to the measure of how far a set of numbers are spread out from their average value, which can be seen as a form of difference.
6. Deviation: This term is used to describe the amount by which a single measurement differs from a fixed value, such as the mean.
7. Differential: In calculus and other areas of mathematics, "differential" refers to an infinitesimal difference between two values.
8. Offset: This word can be used to describe a difference in position or value, often in the context of alignment or adjustment.
9. Disparity: This term is used to describe a great difference, often in a qualitative sense, such as in social or economic contexts.
10. Contrast: While often used in a more general sense, "contrast" can also refer to the difference between two things when compared.

Each of these terms can be used to describe the concept of "difference of," but the choice of word will depend on the specific context and the nuances you wish to convey. For example, in a mathematical problem, "subtraction result" might be the most appropriate, while in a discussion about social issues, "disparity" might be more fitting.

Understanding these alternatives can enrich your language and help you communicate more precisely, whether you're writing a technical paper, solving a math problem, or engaging in a broader discussion about differences and comparisons.