Cold spell and Squall line

Cold spell noun - A spell of cold weather.

Squall line and cold spell are semantically related in advancing front of colder air topic. In some cases you can use "Squall line" instead a noun phrase "Cold spell".

Squall line noun - A cold front along which squalls or thunderstorms are likely.

Cold spell and squall line are semantically related in advancing front of colder air topic. You can use "Cold spell" instead a noun phrase "Squall line".