general classification

noun 0.689

scientific classification

noun 0.686

soil science

noun 0.650

classification scheme

noun 0.640

soil mechanics

noun 0.601

soil management

noun 0.596

soil scientist

noun 0.596

soil

noun 0.592

spectral class

noun 0.590

soil chemistry

noun 0.576

soil physics

noun 0.573

pedology

noun 0.570

soil genesis

noun 0.565

soil fertility

noun 0.558

soil conservation

noun 0.557

social class

noun 0.548

taxonomic system

noun 0.534

soil microbiology

noun 0.528

classifying space

noun 0.523

categorization

noun 0.523

topsoil

noun 0.522

systematics

noun 0.515

school class

noun 0.514

classified

noun 0.510

classer

noun 0.509

taxonomy

noun 0.504

proper class

noun 0.504

stratification

noun 0.502