'Flour' and 'flower': sound same, different meanings.
Homophones: sound alike, different meanings.
'Write' and 'right': pen, opposite of left or morally correct.
'Pair': two similar things, 'pear': tasty fruit.
'Sea': saltwater, 'see': use your eyes.
'Affect': influence, 'effect': resulting change.
'Bare': without covering, 'bear': big mammal.
'Complement': completes, 'compliment': nice remark.
'Hour': sixty minutes, 'our': belongs to us.
'Knot': tying, 'not': saying no.