What context can I use each word in?
Learn when and how to use these words with these examples!
alga
Example
The pond was covered in green alga. [alga: singular noun]
Example
Algae are important producers of oxygen in the ocean. [algae: plural noun]
seaweed
Example
The sushi roll was wrapped in seaweed. [seaweed: noun]
Example
Seaweed is a rich source of iodine. [seaweed: noun]
Good things to know
Which word is more common?
Seaweed is more commonly used than alga in everyday language. Seaweed is a familiar term that is often associated with food, while alga is less common and may be unfamiliar to some people.
What’s the difference in the tone of formality between alga and seaweed?
Both alga and seaweed are relatively formal terms that are commonly used in scientific or technical contexts. However, seaweed may be more versatile and can be used in both formal and informal contexts, while alga is less common and may be perceived as more technical or specialized.
