Difference between Attentive and Observant

ATTENTIVE vs OBSERVANT: NOUN

An Observantine.
A sycophantic servant.
One who observes forms and rules.
[capitalized] Specifically, a member of the more rigorous class of Franciscans which in the fifteenth century became separated from those — the Conventuals — following a milder rule.
An observer.
An obsequious or slavish attendant.
One who is strict in observing or complying with a law, rule, custom, etc.

Taking heed; giving close and thoughtful attention
Paying close attention; alert or observant: : careful.
Showing care for the needs or desires of others; caring or courteous. : thoughtful.
(often followed by `to') giving care or attention
Heedful; intent; observant; regarding with care or attention.
Heedful of the comfort of others; courteous.
Paying attention; noticing, watching, listening, or attending closely

Alert and paying close attention.
Quick to notice; showing quick and keen perception
(of individuals) adhering strictly to laws and rules and customs
Having or showing keen perceptiveness; perceptive.
Diligent in observing a law, custom, duty, or principle.
Submissively attentive; obediently watchful; regardful; mindful; obedient (to); -- with of, .
Taking notice; viewing or noticing attentively; watchful; carefully attentive.
Paying close attention especially to details

Characterized by or of the nature of attention; heedful; intent; observant; regarding with care; mindful: as, an attentive ear or eye; an attentive listener; an attentive act.
Characterized by consideration or observant care; assiduous in ministering to the comfort or pleasure of others; polite; courteous: as, attentive to the ladies.
Synonyms Regardful, watchful, circumspect, wary, careful, thoughtful, alert.
Taking heed

Watching; watchful; observing; having or characterized by good powers of observation, or attention, care, accuracy, etc., in observing: as, an observant mind; a man of observant habits.
Attentive; obedient; submissive; ready to obey and serve; hence, obsequious: with to or of before a personal object.
Carefully attentive in observing or performing whatever is prescribed or required; strict in observing and practising: with of: as, he was very observant of the rules of his order; observant of forms.
Synonyms and
Watchful, mindful, heedful, regardful.
Quick to notice
Showing quick and keen perception

Considerate, Intent, Courteous, Oversolicitous, Wrapped, Advertent, Enwrapped, Absorbed, Heedful, Rapt, Listening, Engrossed, Thoughtful, Solicitous, Observant

Observer, Alert, Caring, Aware, Careful, Scrupulous, Thoughtful, Attuned, Vigilant, Watchful, Law abiding, Lawful, Observing, Perceptive, Attentive

Considerate, Intent, Courteous, Oversolicitous, Wrapped, Advertent, Enwrapped, Absorbed, Heedful, Rapt, Listening, Engrossed, Thoughtful, Solicitous, Observant

Observer, Alert, Caring, Aware, Careful, Scrupulous, Thoughtful, Attuned, Vigilant, Watchful, Law abiding, Lawful, Observing, Perceptive, Attentive

II Cell Counter was really attentive and helpful.
Rich has been simply wonderful, attentive and caring.
Good space, Tons of movies, super attentive staff.
Please be very attentive when measuring your pet.
They have to be attentive, persistent, and flexible.
Rashan was attentive and helpful at every turn.
He is attentive and answered all my questions.
Jordan Lollis was very attentive, but not pushy.
Jamie who are friendly, patient, knowledgeable and attentive.
Each student is expected to bring a Bible, to be attentive and to help others be attentive.

She is observant of school rules and policies.
Parents should be observant of actions, behaviors, andmoods.
Observant Jains will literally not harm a fly.
Derek was so observant and on his guard.
Knowing how to eat clean means being observant.
An observant study especially of the 18th century.
Greenbaum was raised and remained an observant Jew.
He really saved the day by being observant.
You are correct and, as usual, very observant.
There was little difference in opinion between observant and less-observant Catholics, women and men, and among age groups, the poll found.