solid rocket

noun 0.735

nuclear rocket

noun 0.712

rocket motor

noun 0.712

rocket engine

noun 0.705

hybrid

noun 0.669

sounding rocket

noun 0.664

hybrid car

noun 0.660

hybrid orbital

noun 0.659

hybrid vehicle

noun 0.657

rocket

noun 0.637

rocket sled

noun 0.629

rocket ship

noun 0.621

biohybrid

noun 0.609

scramjet

noun 0.605

rocketry

noun 0.597

rocketship

noun 0.589

hybrid war

noun 0.568

hybridization

noun 0.567

ion engine

noun 0.563

turbojet

noun 0.562

hydrazine

noun 0.557

spaceplane

noun 0.557

jet engine

noun 0.556

rocket launcher

noun 0.555

ramjet

noun 0.549

jet pack

noun 0.545

space shuttle

noun 0.544

fusion reactor

noun 0.543

hydrogen bomb

noun 0.539

nuclear aircraft

noun 0.536

resonance hybrid

noun 0.535

rocket science

noun 0.533

hovercraft

noun 0.530

hybridity

noun 0.526

hybridism

noun 0.523

rocket-propelled grenade

noun 0.523

rocket scientist

noun 0.519

hybrid speciation

noun 0.518

nonhybrid

noun 0.517

turbofan

noun 0.515

metal hydride

noun 0.515

missile

noun 0.514

propellant

noun 0.514

biofuel

noun 0.512

turboprop

noun 0.512

hydride

noun 0.511

oxyhydrogen

noun 0.511

cruise missile

noun 0.511

biohydrogen

noun 0.506

hydrogen burning

noun 0.505

ballistic missile

noun 0.503

thruster

noun 0.502

gas jet

noun 0.501