The scientific classification of Azalea and Pentas 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. Azalea and Pentas kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Azalea and Pentas family is a major factor of Azalea and Pentas 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. Azalea belongs to the family Ericaceae and Pentas belongs to the family Rubiaceae.
While comparing scientific classification, Azalea and Pentas genus and other classification are also important. Also, when you compare Azalea and Pentas, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Rhododendron and other plant's genus is Pentas. Azalea tribe is Rhodoreae and Pentas tribe is Knoxieae. Azalea clade is Angiosperms, Asterids and Eudicots and order is Ericales whereas Pentas clade is Angiosperms, Asterids and Eudicots and order is Gentianales. Every plant have subfamilies. Azalea subfamilies are, Ericoideae and Pentas subfamilies are Rubioideae. In this way you can compare scientific classification of Azalea and Pentas and other products also.