Kelp vs. Seaweed

Kelpnoun

Any of several large brown seaweeds (order Laminariales).

Seaweednoun

Any of numerous marine plants and algae, such as a kelp.

Kelpnoun

The calcined ashes of seaweed, formerly used in glass and iodine manufacture.

Seaweednoun

Popularly, any plant or plants growing in the sea.

Kelpnoun

The calcined ashes of seaweed, - formerly much used in the manufacture of glass, now used in the manufacture of iodine.

Seaweednoun

Any marine plant of the class Algæ, as kelp, dulse, Fucus, Ulva, etc.

Kelpnoun

Any large blackish seaweed.

Seaweednoun

plant growing in the sea, especially marine algae

Kelpnoun

large brown seaweeds having fluted leathery fronds

Seaweednoun

large algae growing in the sea or on rocks below the high-water mark

‘seaweed glistened on the rocks’; ‘seaweeds abound on most shores’;

Kelp

Kelps are large brown algae seaweeds that make up the order Laminariales. There are about 30 different genera.

Seaweed

Seaweed, or macroalgae, refers to thousands of species of macroscopic, multicellular, marine algae. The term includes some types of Rhodophyta (red), Phaeophyta (brown) and Chlorophyta (green) macroalgae.