The scientific classification of Pepperwort and Sweet William includes the entire classification chart that includes kingdom, family, clade, tribe etc. A kingdom is the second highest taxonomic rank. A taxonomic rank is the level that a living organisms are placed in hierarchical level of arrangement of life forms. All the living organisms are divided into kingdoms. Plant kingdom is a main classification of living organisms that include all plants. There are six kingdoms which are: Plantae, Animalia, Fungi, Protista, Aschaea/Archaeabacteria and Bacteria Eubacteria. Pepperwort and Sweet William kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Pepperwort and Sweet William family is a major factor of Pepperwort and Sweet William Scientific Classification. Plant family helps you narrow the search of your plants. It also gives you idea about, how the plant looks, how the seed will be like etc. These two plant families can be different or same. Pepperwort belongs to the family Marsileaceae and Sweet William belongs to the family Caryophyllaceae.
While comparing scientific classification, Pepperwort and Sweet William genus and other classification are also important. Also, when you compare Pepperwort and Sweet William, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Marsilea and other plant's genus is Dianthus. Pepperwort tribe is Lapidieae and Sweet William tribe is Not Available. Pepperwort clade is Angiosperms, Eudicots and Rosids and order is NA whereas Sweet William clade is Angiosperms, Core eudicots and Eudicots and order is Caryophyllales. Every plant have subfamilies. Pepperwort subfamilies are, NA and Sweet William subfamilies are Not Available. In this way you can compare scientific classification of Pepperwort and Sweet William and other products also.