Monomials and binomials are important ideas in algebra. The main difference between them is the number of terms they have.

• Monomials: These are expressions with only one term. For example, $3x$ and $7xy^2$ are monomials. You can think of them like the simplest building blocks of math.

• Binomials: These have two terms working together. Examples include $x + 5$ and $3a - 2b$. You can think of them as a team made up of two parts.

Knowing the difference between monomials and binomials can make it easier to solve problems. It also helps when you start learning about more complicated equations later on!