atmosphere, hydrosphere, lithosphere, oxygen, oxide, carbon dioxide, hydrogen, core, crust, mantle, longitude, latitude, horizon, altitude, disaster, mishap, catastrophic, calamity, endanger, jeopardise, destructive, El Nino, greenhouse, phenomenon...
photosynthesis, respire, dioxide, vegetation, herb, perennial, botany, ecology, ecosystem, eco-friendly, horticulture, organism, genetics, mutation, variation, diversity, hybridisation, classify, reproduce, evolve, fluctuate, reclaim, cultivate, sow...
biologist, zoologist, ecologist, botanist, mammal, primate, vertebrate, reptile, amphibian, carnivore, herbivore, creature, wildlife, fauna, flora, species, flock, herd, swarm, throng, crowd, beast, brute, cruel, originate, derive, stem, ancestor...
galaxy, cosmos, universe, interstellar, terrestrial, celestial, astronomy, astrology, astronaut, comet, meteorite, crater, dust, ash, envelope, chunk, spacecraft, spaceship, probe, module, propulsion, pressure, dynamics, motion, vent, tail, curve...
education, primary, secondary, university, college, institute, academy, learn, study, acquire, knowledge, expertise, novice, recruit, literate, illiteracy, numerate, problem, issue, affair, controversial, puzzle, riddle, obscure, instil, cram...
technology, technique, polytechnic, engineer, mechanic, advance, innovate, breakthrough, gizmo, patent, devise, invent, discover, disclose, reveal, uncover, expose, domain, field, realm, foundation, specialise, absorb, concentrate, focus, utilise...
culture, civilisation, renaissance, epic, ideology, tradition, convention, custom, feudalism, slavery, ethical, moral, tribe, aboriginal, inhabitant, native, local, exotic, foreigner, alien, anthropologist, humanitarian, heritage, inherit, antique...
language, symbol, sign, gesture, handwriting, pictograph, wedge, knot, linguistics, semantic, syntax, grammar, phonetics, pronounce, intonation, inflection, dialect, accent, utterance, oral, verbal, syllable, phoneme, vowel, consonant, alphabet...
medium, press, journalist, critic, commentator, exponent, announcer, correspondent, messenger, editor, typist, handout, leaflet, propaganda, publish, disseminate, foresee, anticipate, expect, await, pastime, entertain, recreation, amuse, gossip, rumour...
stuff, item, merchandise, souvenir, artifact, material, raw, crude, necessity, outfit, kit, utensil, garbage, rubbish, trash, recycle, reuse, litter, waste, junk, landfill, sewerage, detergent, lotion, shampoo, soap, tub, plug, tap, pipe, tube, mop...
fashion, style, trend, tendency, current, popularity, vogue, prevail, model, icon, idol, luxury, extravagant, jewelry, jewel, gem, jade, adorn, ornament, embellish, embroider, hairdressing, pigment, dye, masquerade, veil, costume, fascinate, decent...
food, diet, appetite, treat, cater, provision, edible, recipe, restaurant, refectory, bar, cafeteria, buffet, barbecue, supper, banquet, refreshment, snack, appetiser, cuisine, menu, order, takeaway, chef, gourmet, vegetarian, cutlery, silver, ceramic...
