Faintness and Soft spot

Faintness noun - The quality or state of lacking physical strength or vigor.

Soft spot and faintness are semantically related in weakness topic. In some cases you can use "Soft spot" instead a noun "Faintness", when it comes to topics like defect, fragility.

Soft spot noun - A vulnerable point.

Faintness and soft spot are semantically related in fragility topic. You can use "Faintness" instead a noun phrase "Soft spot".