Answer:
The son had showed his father a match. Whenever he lit the match, it filled the entire room with light, yet it was still small enough to fit into his pocket.
Answer:
A function analogy is used in the sentence.
Something that is ordinary or common can also be called plain, a homophone for that word would be plane. Similarly, something that is to see how heavy something is, would be to weigh, a homophone for that word being way.