The word ladder is commonly used when referring to a tool that assists in reaching higher places. It's used to describe an object that one can climb, typically to perform tasks like changing a lightbulb or reaching a high shelf. In metaphorical terms, ladder can also represent a series of steps or stages by which one can ascend or advance in a particular process or structure.

Latter is often used to indicate the second of two items or the last item in a sequence discussed previously in the text or speech. It serves as a referencing tool in comparison, choice, or sequence scenarios. It is important to remember that latter should only be used when referring to two things; otherwise, 'last' is more appropriate.

While ladder and latter may sound similar, their meanings are quite distinct. A ladder is a physical object used to reach higher places, while latter is a descriptive word that indicates the second of two things or the endmost item in a sequence. Understanding the difference is key to using each word accurately and effectively in various contexts. Remember that ladder can be a noun or a verb with different meanings, and latter functions primarily as an adjective or a pronoun referring back to the second item of a pair mentioned before.