This description relates to Mr. Stonecrop’s role in the main conflict of the story because Mr. Stonecrop, like a mountain, is intimidating and strongly holds his position against the people of Malaga Island.
Explanation:
Mr. Stonecrop is the Richest man of the town, wants to turn Malaga Island into a tourist spot. He is described a strong and extremely intimidating person that's the reason why the comparison with a mountain is more than perfect since it is immobile, it is impossible to destroy, and more importantly has an impressive visual presence and size.
Meter - Meter is a stressed and unstressed syllabic pattern in a verse, or within the lines of a poem. Stressed syllables tend to be longer, and unstressed shorter. In simple language, meter is a poetic device that serves as a linguistic sound pattern for the verses, as it gives poetry a rhythmical and melodious sound
Dude these are personal questions that only you can answer. I recommend that you use a dictionary to find the definitions of each word. From there you can make a sentence with each word.