friend - n. a person one likes and trusts

frighten - v. to cause great fear

from - prep. having a person, place or thing as a beginning or cause ("It is a message from the president."); at a place distant, not near ("The school is five kilometers from my home."); because of ("He is suffering from cancer.")

front - n. the forward part; the opposite of back; the beginning; the first part

fruit - n. food from trees and plants

fuel - n. any substance¹ burned to create heat or power

full - ad. containing as much as a person or thing can hold; complete

fun - n. anything that is pleasing and causes happiness

funeral² - n. a ceremony held in connection with the burial³ or burning of the dead

future - n. time after now ("We can talk about it in the future."); ad. in the time to come ("All future meetings will be held in this room.")