Which of the following is more natural?
Your job is to check products for defects.
Your job is to spot defective goods.
I'd appreciate your help.
Which of the following is more natural?
Your job is to check products for defects.
Your job is to spot defective goods.
I'd appreciate your help.
Both sentences are "natural", but they are not equally useful.
It is normal to have a situation where somebody takes each "object" and studies it in order to find defects. Therefore the following actually has a practical purpose:
Your job is to check products for defects.
However, "to spot" is more likely a passive process: you just sit comfortably and look from a distance. If you happen to see a defect, report it. Therefore, there is a high chance to release products as defect-less, while they actually have defects - you just did not spot them.
So your second sentence is correct and sounds "natural", but it has no practical purpose - actually, if you use it in a business, you may be in for some serious trouble.
Either could be used:
"Check goods" suggest a process of taking each item and checking it, in quite a structured way.
"Spot" suggests a less structured approach, searching for defects in multiple ways.