The scientific classification of Petunia and Areca nut 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. Petunia and Areca nut kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Petunia and Areca nut family is a major factor of Petunia and Areca nut 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. Petunia belongs to the family Solanaceae and Areca nut belongs to the family Arecaceae.
While comparing scientific classification, Petunia and Areca nut genus and other classification are also important. Also, when you compare Petunia and Areca nut, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Petunia and other plant's genus is Archontophoenix. Petunia tribe is Not Available and Areca nut tribe is Areceae. Petunia clade is Angiosperms, Asterids and Eudicots and order is Solanales whereas Areca nut clade is Angiosperms, Commelinids and Monocots and order is Arecales. Every plant have subfamilies. Petunia subfamilies are, Petunioideae and Areca nut subfamilies are Arecoideae. In this way you can compare scientific classification of Petunia and Areca nut and other products also.