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