Seaweed is a term mostly applied to some types of algae. It is not a scientific classification, but rather a colloquial term. The organisms may belong to quite different types of algae, and other organisms in the same groups may not be what we think of as seaweed. Thus their scientific names can be quite different from each other. Some examples:
Bladderwrack: fucus vesiculosus
Carrageen Mastocarpus stellatus
algae is also known as cynobacteria.its another name for it.
Kelp
Kelp.
caulerpa
Thermal energy is another name for heat energy.
Another name for air resistance is aerodynamic drag.
Another word for energy is heat.
Acoustical energy is only the vibrations that make sound, so sound is another name.
filmology
negi
Perseus Jackson, or as annbeth calls him, Seaweed Brain
There is no specific name for fear of seaweed, however, phytophobia is the fear of plants which is the closest name for fear of seaweed.
seaweed
Yes, Kelp is a seaweed. Seaweed is the common name for most marine algae. Kelp is a type of brown seaweed. See related link
alga
Dulse
lato
Eucheuma
Look up Susswassertang on wikipedia. Freshwater plant whose name means freshwater seaweed. Yes, I live on a lake and we have A TON of seaweed
Seaweed is biotic. It is biotic because it is a plant and plants are living things. Seaweed is a multicellular benthic marine algae.
Caulerpa lentillifera