Слова aim, purpose, target синонимы? Эти слова полностью взаимозаменяемы или есть разница когда какое использовать?

+goal, target-скорее мишень.

aim ~ noun uncommon

1. an anticipated outcome that is intended or that guides your planned actions

his intent was to provide a new translation; good intentions are not enough; it was created with the conscious aim of answering immediate needs; he made no secret of his designs

2. the goal intended to be attained (and which is believed to be attainable)

the sole object of her trip was to see her children

3. the action of directing something at an object

he took aim and fired

4. the direction or path along which something moves or along which it lies

aim ~ verb common

1. point or cause to go (blows, weapons, or objects such as photographic equipment) towards

Please don't aim at your little brother!; He trained his gun on the burglar; Don't train your camera on the women; Take a swipe at one's opponent

2. propose or intend

I aim to arrive at noon

3. move into a desired direction of discourse

What are you driving at?

4. specifically design a product, event, or activity for a certain public

5. intend (something) to move towards a certain goal

He aimed his fists towards his opponent's face; criticism directed at her superior; direct your anger towards others, not towards yourself

6. direct (a remark) toward an intended goal

She wanted to aim a pun

7. have an ambitious plan or a lofty goal

They aim to move
purpose ~ noun uncommon

1. an anticipated outcome that is intended or that guides your planned actions

his intent was to provide a new translation; good intentions are not enough; it was created with the conscious aim of answering immediate needs; he made no secret of his designs

2. what something is used for

the function of an auger is to bore holes; ballet is beautiful but what use is it?

3. the quality of being determined to do or achieve something; firmness of purpose

his determination showed in his every movement; he is a man of purpose

purpose ~ verb rare

1. propose or intend

I aim to arrive at noon

2. reach a decision

he resolved never to drink again
target ~ noun common

1. a reference point to shoot at

his arrow hit the mark

2. a person who is the aim of an attack (especially a victim of ridicule or exploitation) by some hostile person or influence

he fell prey to muggers; everyone was fair game; the target of a manhunt

3. the location of the target that is to be hit

4. sports equipment consisting of an object set up for a marksman or archer to aim at

5. the goal intended to be attained (and which is believed to be attainable)

the sole object of her trip was to see her children

target ~ verb very rare

1. intend (something) to move towards a certain goal

He aimed his fists towards his opponent's face; criticism directed at her superior; direct your anger towards others, not towards yourself

Purpose - скорее имеет значение "смысл". Например, What is the purpose of this device? Какой смысл в это устройстве? (Какая цель у этого устройства?).
Aim - чаще используется как глагол (целиться), но может и использоваться в качестве существительного (процесс прицеливания).
Target - обозначает цель в смысле "объект прицеливания".

я по этой теме писала курсовую работу. Все эти слова входят в одно семантическое поле, то есть имеют схожее значение. При этом какие-то из них имеют более сильное, а другие более слабое значение.