structural
adjective
relating to or caused by structure, especially political or economic structure
“structural unemployment in a technological society”
relating to or having or characterized by structure
“structural engineer”
“structural errors”
affecting or involved in structure or construction
“the structural details of a house such as beams and joists and rafters; not ornamental elements”
“structural damage”
concerned with systematic structure in a particular field of study
pertaining to geological structure
“geomorphological features of the Black Hills”
“morphological features of granite”
relating to or concerned with the morphology of plants and animals
“morphological differences”
Source: WordNet 3.1, Princeton University