The scientific classification of Catnip and White Onion 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. Catnip and White Onion kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Catnip and White Onion family is a major factor of Catnip and White Onion 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. Catnip belongs to the family Lamiaceae and White Onion belongs to the family Liliaceae.
While comparing scientific classification, Catnip and White Onion genus and other classification are also important. Also, when you compare Catnip and White Onion, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Nepeta and other plant's genus is Allium. Catnip tribe is Mentheae and White Onion tribe is Allieae. Catnip clade is Angiosperms, Asterids and Eudicots and order is Lamiales whereas White Onion clade is Angiosperms and Monocots and order is Asparagales. Every plant have subfamilies. Catnip subfamilies are, Nepetoideae and White Onion subfamilies are Allioideae. In this way you can compare scientific classification of Catnip and White Onion and other products also.