Archetypes as a shorthand
An archetype is a compact description of a recurring pattern: the builder, the messenger, the healer. These tools assign one from your details and then explain what that pattern tends to be good at and what it tends to avoid.
The value of an archetype is that it is memorable. A number is easy to forget; a role you recognise yourself in is not.
Reading a gift honestly
A gift reading describes an aptitude in symbolic terms. It is not a claim about ability, and nobody should make a decision about training, work or health on the strength of one.
The spiritual meanings library covers the symbols these readings draw on in more depth.