систематика angolul

systematics▼(the systematic classification of organisms)
noun
[UK: ˌsɪ.stə.ˈmæ.tɪks] [US: ˌsɪ.stə.ˈmæ.tɪks]

taxonomy [taxonomies]▼(classification in a hierarchical system)
noun
[UK: tæk.ˈsɒ.nə.mi] [US: tæk.ˈsɒ.nə.mi]