Related by context. Frequent words. (Click for all words.) 57 terbium 55 dysprosium 54 Rare earth 54 rare earth 53 elements REE 53 REEs 52 rare earths 50 Niobium 50 Neodymium 49 Rare earths 49 element REE 49 hafnium 48 metals alloys 48 inorganic compounds 48 cobalt nickel 48 superalloys 48 Rhenium 48 cerium 47 europium 47 chemically inert 47 metals 47 cobalt oxide 46 indium 46 Highly enriched uranium 46 samarium 46 lanthanum 45 lithium cobalt oxide 45 HREO 45 super alloys 45 Zirconium 45 metal alloys 45 rhenium 45 yttrium 45 neodymium 44 HREE 44 uranium thorium 44 Yttrium 44 tellurium 44 Germanium 44 osmium 44 nanoclusters 44 Hafnium 44 halloysite 44 uranium vanadium 44 minerals 44 PGEs 44 dopants 44 zirconium 44 nonmetal 44 dopant 44 Rare Metals 43 sulfide minerals 43 tantalite 43 Kipawa deposit 43 metal PGM 43 bismuth 43 titanium oxide 43 silver platinum palladium 43 conductive polymers 43 manganese oxide 43 Rare Earth Elements 43 ductile 43 potassium magnesium 43 macroscale 43 monazite 43 microscopic particles 42 PZT 42 iron manganese 42 battery chemistries 42 nickel cobalt 42 Nanotube 42 magnetic particle 42 ZrO2 42 oxides 42 Nanowire 42 group metals PGMs 42 Kuan Yin Taiwan 42 metallic minerals 42 alpha particles 42 Gallium 42 sulphide nickel 42 superconductors 42 nanosized 42 carbon dioxide methane nitrous 42 cobalt 41 cathode materials 41 noble gases 41 REE 41 Rare Earth 41 copper nickel 41 Gold Molybdenum 41 placer deposits 41 boron nitride 41 nickel copper cobalt 41 nickel alloy 41 dielectric materials 41 mercury cadmium 41 Quantum dots 41 titanium alloys 41 copper ores 41 Chromite