Should flag plural gerunds

In Euroenglish and possibly in Indian English there are English gerunds (or present participles) used as nouns that are not used in standard English. They can even takes plurals:

- "parkings" → car parks, parking lots, etc.
- (There must be others that are not springing to mind right now...)

There's also at least one that's becoming normalized into native speaker English that other native speakers object to:
- "trainings" → courses, training sessions, etc.

Many others are standard English but will be in the dictionary:
- findings
- killings
- openings
- tapings
- viewings