parasite

noun 0.784

parasitoid

noun 0.739

parasitology

noun 0.697

symbiosis

noun 0.697

kleptoparasitism

noun 0.669

brood parasitism

noun 0.667

mutualism

noun 0.656

ectoparasite

noun 0.647

predation

noun 0.646

endoparasite

noun 0.615

symbiotic

noun 0.614

heterotrophy

noun 0.594

brood parasite

noun 0.583

symbiote

noun 0.579

symbiont

noun 0.575

infestation

noun 0.568

parasiticide

noun 0.566

endosymbiosis

noun 0.563

saprophyte

noun 0.563

epibiont

noun 0.557

cannibalism

noun 0.557

neutralism

noun 0.554

antiparasitic

noun 0.547

myiasis

noun 0.545

pathogen

noun 0.542

vampirism

noun 0.542

pediculosis

noun 0.541

herbivory

noun 0.537

antibiosis

noun 0.533

infection

noun 0.532

allelopathy

noun 0.529

zoonosis

noun 0.527

fungus

noun 0.527

leishmaniasis

noun 0.527

exploitation

noun 0.526

pathogenicity

noun 0.525

trypanosomiasis

noun 0.523

heterotroph

noun 0.519

opportunism

noun 0.517

coevolution

noun 0.517

ecology

noun 0.517

interdependence

noun 0.517

speciesism

noun 0.516

paranoia

noun 0.515

commensal

noun 0.515

leeching

noun 0.514

helminthiasis

noun 0.514

socialism

noun 0.513

interdependency

noun 0.510

phagocytosis

noun 0.510

toxoplasmosis

noun 0.507

pathology

noun 0.507

narcissism

noun 0.506

egoism

noun 0.506

epiphyte

noun 0.506

ascariasis

noun 0.506

parasomnia

noun 0.506

disease

noun 0.504

depredation

noun 0.503

leishmania

noun 0.502

interspecific competition

noun 0.501

mimicry

noun 0.501

endosymbiont

noun 0.500