Sense organs is not a word, but a phrase. You would have to list the various organs.
Start is a synonym for tee off in the golf sense.
It is not really a synonym in the sense of one word meaning the same thing as another word, but the equator is zero degrees latitude.
No humans sense organs are better than animals sense organs.
In one sense, "watch." In another, "croak."
"Above" for one sense of over and "finished" for another one.
Sly or crafty (for two). Sharp, cunning, intelligent. (For three more)
I think you don't understand what a synonym or an antonym is. A synonym is a word that means the same or a similar thing to another word, while an antonym means the opposite. So exist is both a synonym and an antonym, depending on which word you are relating it to. Exist is a synonym for live, but exist is an antonym for, say, in a sense, the word void.
The meaning of the word despair can be: the sense of futility, loss of hope, loss of confidence, cannot cope, sense of defeat. One synonym is to loose heart.
many organs
ways of sense organs healthy
Why are sense organs important to living organisms
types of sense organs according to location