The scientific classification of Trichocereus and Pineapple 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. Trichocereus and Pineapple kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Trichocereus and Pineapple family is a major factor of Trichocereus and Pineapple 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. Trichocereus belongs to the family Cactaceae and Pineapple belongs to the family Bromeliaceae.
While comparing scientific classification, Trichocereus and Pineapple genus and other classification are also important. Also, when you compare Trichocereus and Pineapple, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Echinopsis and other plant's genus is Ananas. Trichocereus tribe is Trichocereeae and Pineapple tribe is Not Available. Trichocereus clade is Angiosperms, Core eudicots and Eudicots and order is Caryophyllales whereas Pineapple clade is Angiosperms, Commelinids and Monocots and order is Bromeliales. Every plant have subfamilies. Trichocereus subfamilies are, Cactoideae and Pineapple subfamilies are Bromelioideae. In this way you can compare scientific classification of Trichocereus and Pineapple and other products also.