In addition to the two great answers you've received, I'd add a third point. The element of 'book' does not matter in the slightest, but the question should be a good question regardless of the book's existence. The questions that are on topic here are good questions where the book is context - for example, asking how to calculate some finance term, providing the book reference for where they get the equation is useful to the question.
But in your case, your question wasn't very good because you just pasted the text of the book (in an image) and asked to define a few terms. That doesn't have sufficient outside context to actually make sense - it's just something in the book itself. Phrased differently, you might get a better reception, if you put some context for how this is a relevant personal finance question. Making up an example (not from your question):
I'm reading up on how to handle tenant evictions on properties I owned, and I notice that [this book] includes this sentence:
When evicting a tenant, you usually hire the sheriff's office to carry out the notice.
What is a "sheriff" in this context? Is this the local police force? Or do they have some more specific meaning?
That's a good finance question because it shows how it's related to our topic area (being a landlord is a common investment strategy, if a risky one), puts a small amount of context from the book, and asks clearly a question that could stand without the book.
As a rule, if your question includes more information from outside sources than it does from your own creation, it's probably not a good question.