The word for today is…
morphology (noun):
1a: a branch of biology that deals with the form and structure of animals and plants
b: the form and structure of an organism or any of its parts
2a: a study and description of word formation (such as inflection, derivation, and compounding) in language
b: the system of word-forming elements and processes in a language
3a: a study of structure or form
b: structure, form
4: the external structure of rocks in relation to the development of erosional forms or topographic features
Source : Merriam -Webster
Etymology : Within the field of biology, morphology is the study of the shapes and arrangement of parts of organisms, in order to determine their function, their development, and how they may have been shaped by evolution. Morphology is particularly important in classifying species, since it can often reveal how closely one species is related to another. Morphology is studied within other sciences as well, including astronomy and geology. And in language, morphology considers where words come from and why they look the way they do.
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