What are homophones? words that are spelled incorrectly several times in one paper
words that are spelled exactly as they sound
words that have different meanings depending on how they are used
words that have the same sound but different spellings and meaning

words that have the same sound but different spellings and meaning

Explanation:

Homophones are generally words that sound the same but have different spellings and even meaning.

For example the words new and knew are homophones.

They have the same sound when pronouncing but their meaning is different.

Also, the words bawl and ball are homophones.

We see that both words have very similar pronunciation but their meanings are completely different.  

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.