Here's why and some specific terms to use:
* Storm clouds are a variety of cloud types. Storms can be associated with cumulonimbus clouds (thunderstorms), cumulus congestus (towering clouds that may develop into thunderstorms), nimbostratus (rain clouds), and even some types of altostratus or cirrostratus if they produce precipitation.
* Scientific terminology is specific. Scientists prefer to use terms that describe the cloud type, formation, and associated weather phenomena.
Here are some more specific terms:
* Cumulonimbus: The classic thunderstorm cloud, often called a "thunderhead."
* Cumulus congestus: Towering cumulus clouds that may develop into thunderstorms.
* Nimbostratus: Dark, gray, rain-producing clouds.
* Supercell: A powerful, long-lasting thunderstorm with a rotating updraft.
* Mesocyclone: A rotating column of air within a supercell thunderstorm.
To be more precise, use the specific cloud type and associated weather phenomena. For example, instead of "storm cloud," you could say:
* "Cumulonimbus cloud with heavy rain and lightning."
* "Nimbostratus cloud producing a steady drizzle."
* "Supercell thunderstorm with a rotating updraft and a possible tornado."
