Kathy asked about the difference between object and reject. These words can be both verbs and nouns, but I'm going to assume that Kathy was asking about the verbs, because they are close in meaning.
Both of these verbs have a negative sense to them, but they are not the same. The verb object means "to disagree with or oppose something, and the verb reject means to "refuse to believe, accept, or consider something."
No one objected when the paintings were removed.
A number of people objected to the proposed changes.
My teacher rejected my excuse for being late.
The committee rejected my proposal.
Only object can be used in a court of law, to state opposition to something said by the opposing side.
(in court) "Your honor, I object. That question is misleading."
There is also a grammatical difference: The verb object can occur without a direct object (D.O.), as shown in the example below, but the verb reject cannot. In other words, you have to reject something.
Her parents objected when she tried to keep the little kitten she had found.
He wanted to ask Marie on a date, but he was afraid she would reject him. (The D.O. of reject is him.)
