The key thing to realize is that if 'lightning' is mistakenly used in a sentence in place of 'lightning bug', the meaning of the sentence will almost always be a cause for raised eyebrows.
If you really want to plumb the depths of the whole "right word" mind-boggle, consider the difference between a "certificate of compliance" and a "certificate of conformance" (aka, "certificate of conformity").
The former is basically a statement, made by a manufacturer, that a product complies with stated requirements.
The latter is a document issued by an official agency of some sort, stating that test results show product compliance with stated requirements.
The two are not interchangeable.
Cheers...
If you really want to plumb the depths of the whole "right word" mind-boggle, consider the difference between a "certificate of compliance" and a "certificate of conformance" (aka, "certificate of conformity").
The former is basically a statement, made by a manufacturer, that a product complies with stated requirements.
The latter is a document issued by an official agency of some sort, stating that test results show product compliance with stated requirements.
The two are not interchangeable.
Cheers...