Actually, cotton has no power to observe: it has no eyes or other senses.
She was an observant poet.
Yes, the adjective observant usually means keen-eyed or perceptive.
The root word for "observant" is "observe."
Observant is an adjective. Observing is a verb
"Observant" is an adjective that describes someone who is quick to perceive things or pays close attention to detail.
He was very observant to see any movement.
You are very observant; I saw you looking at that bird.
Mary was very observant to the rules of her new church.
Because that's why they're called observant.
Observant:Those of many religious faiths are observant of the Sabbath and other holy days.Observance:Jews may show respect for God through observance of Shabbat.
Another word for observant would be attentive. You could also say mindful or perceptive.
1. Quick to notice things.2. Following the rules of a religious community (and observant Jew, an observant Hindu, etc.)