The Wizarding World is obviously packed with famous wizarding families, whether they're so-called old blood like the Malfoys or new generation wizards and witches like Hermione Grainger. When Harry Potter learns of his true calling and the curtain is pulled back on that magical community, he's faced with a catalogue of weird-sounding names and family trees to learn, but that's not even the half of it.
That world is also one populated by incredible magical creatures from dragons to Nifflers, all somehow cleverly shielded from the eyes of Muggles despite some of them being huge and others not particularly caring WHO sees them. So broad and interesting (and dangerous) are these creatures that there's a whole subject at Hogwarts dedicated to them (mostly thanks to Newt Scamander).
And since understanding them is half the battle, you should have been paying attention enough during the Harry Potter films to be able to answer all of these questions!
Answers at the end!
1. Which Goblin Created Godric Gryffindor's Sword?