Idio
Here are two words that use the same vowel sound as "ear": 'fear' and 'near'.
two-hundred words
zeugma
Never use two words when one will do
Those two words are synonyms.
Will and shall.
Option or alternative will show a choice between two.
One of them is popstar. The two words that are combined are pop and star.
stink and odorless
supply and demand
As a noun they are two separate words. As an adjective you will use the hyphen.
The two words "do it" are two syllables long, and may have stretched out.