Knowing the meanning of new words

New words:
beard, landmarks.
He beard (I don't know what you are saying here. Beard is a noun, and you used it as a verb) to your nephew to run.
He has a small beard.
The beard of my friend is small.
Landmarks are very important for people
The landmark of city is the San Francisco church.
Excuse me. May you say Please tell me , What is the difference between hurry and rush and riddle and guess. ( I guess this is a question)

Hurry and rush are similar and are interchangeable. They can be both nouns and verbs.

A riddle is generally a question or a puzzle, something that requires thinking to figure out. A guess can be an attempt to answer a riddle. EX: He thought about the riddle of the Sphynx for a long time...and finally gave a guess.

There are some other meanings with riddle and guess, but I won't go into those to keep things simple.