Are Nuphar and Geum both types of aquatic plants?
no
Geum
Geum , commonly called avens, is a genus of about 50 species of rhizomatous perennial herbaceous plants in the rose family, widespread across Europe, Asia, North and South America, Africa, and New Zealand.
 They are closely related to "Potentilla" and "Fragaria".
 From a basal rosette of leaves, they produce flowers on wiry stalks, in shades of white, red, yellow, and orange, in midsummer.
 "Geum" species are evergreen except where winter temperatures drop below 0 °F .
 The cultivars 'Lady Stratheden' and 'Mrs J. Bradshaw' have gained the Royal Horticultural Society's Award of Garden Merit.
Nuphar
Nuphar is genus of aquatic plants in the family Nymphaeaceae, with a temperate to subarctic Northern Hemisphere distribution.
 Common names include water-lily (Eurasian species; shared with many other genera in the same family), pond-lily, alligator-bonnet or bonnet lily, and spatterdock (North American species).
Aquatic plant
Aquatic plants are plants that have adapted to living in aquatic environments (saltwater or freshwater).
 They are also referred to as hydrophytes or macrophytes.
 These plants require special adaptations for living submerged in water, or at the water's surface.
 The most common adaptation is aerenchyma, but floating leaves and finely dissected leaves are also common.
 Aquatic plants can only grow in water or in soil that is permanently saturated with water.
 They are therefore a common component of wetlands. Nuphar pumila
Nuphar pumila, the least water-lily or small yellow pond-lily, is an aquatic perennial plant in the Nymphaeaceae family.
 It is also known as dwarf water lily because it is the dwarf species of "Nuphar lutea"; while "Nuphar pumila" has a star-shaped, or lobed form of the stigma disc and glabrous leaf undersides, "Nuphar lutea" has a round stigma disc and the undersides of its leaves are occasionally fine-haired on the midribs.
 Its flowers bloom from July to August and are typically pollinated by flies. List of freshwater aquarium plant species
Aquatic plants are used to give the freshwater aquarium a natural appearance, oxygenate the water, and provide habitat for fish, especially fry (babies) and for invertebrates.
 Some aquarium fish and invertebrates also eat live plants.
 Hobbyists use aquatic plants for aquascaping, of several aesthetic styles. List of brackish aquarium plant species
Aquatic plants are used to give the aquarium a natural appearance, oxygenate the water, and provide habitat for fish, especially fry (babies) and for invertebrates.
 Some aquarium fish and invertebrates also eat live plants.
 Hobby aquarists use aquatic plants for aquascaping. List of marine aquarium plant species
Aquatic plants are used to give the aquarium a natural appearance, oxygenate the water, and provide habitat for fish, especially fry (babies) and for invertebrates.
 Some aquarium fish and invertebrates also eat live plants.
 Hobby aquarists use aquatic plants for aquascaping. William Tricker
William Tricker (1852–1916) was an English-born estate gardener.
 He trained at Kew Gardens in London, before emigrating to the United States in the later 19th century.
 His interest was in aquatic plants, and he began a company, named William Tricker, that specialized in aquatic plants.
 The company sent out its first mail order catalog in 1892, and is still operating, as William Tricker, Inc. based in Independence, Ohio.
 The company currently displays Tricker's original catalog.
 Being a plantsman, he wrote many articles for the publication "Garden and Forest" in the 1890s dealing with aquatic plants.
 He is well known for producing many hybrid water lilies that are still known around the world.
 He introduced a water lily with 6-feet pads from South America, which he named "Victoria trickeri", although it is now known as "Victoria cruziana".
 He died in 1916, after which his son, Charles Tricker, took over the business. Endothall
Endothall or 3,6-endoxohexahydrophthalic acid is used as an herbicide for both terrestrial and aquatic plants.
 It is used as an aquatic herbicide for submerged aquatic plants and algae in lakes, ponds and irrigation canals.
 It is used as a desiccant on potatoes, hops, cotton, clover and alfalfa.
 It is used as a biocide to control mollusks and algae in cooling towers. Hygrophila (plant)
Hygrophila, commonly known as swampweeds, is a genus of flowering plants in the acanthus family, Acanthaceae.
 There are about 80 to 100 species, of which many are aquatic plants.
 The genus is distributed across the tropical and subtropical world.
 It is one of only two genera in its family that contains aquatic plants, the other being "Justicia".
 The genus is treated in the tribe "Hygrophileae", which is noted as being in need of revision at the genus level, meaning the current taxonomic boundaries of "Hygrophila" are likely to change in the future.