Related by context. Frequent words. (Click for all words.) 67 cylindrical 63 globular 61 conical 59 hexagonal 58 hexagons 58 concave 58 donut shaped 57 oblong 56 cone shaped 56 ellipse 55 diameter 55 spacetime 54 hexagon 54 oval shaped 54 concentric 54 helical 54 planar 53 convex 53 orb 53 concentric rings 52 nanometer sized 52 rectangular 52 filaments 52 microstructures 51 superfluid 51 translucent 51 omnidirectional 51 billiard balls 51 radii 51 protrusions 50 atoms 50 curved 50 cigar shaped 50 colloidal 50 geometrical 49 teardrop shaped 49 geometric 49 conformal 49 crystalline 49 polygonal 49 pyramidal 49 nucleation 49 crystals 49 diameters 49 monolayer 49 metallic 49 droplet 49 curvature 49 omni directional 49 cube shaped 48 angular 48 rectangular shaped 48 gelatinous 48 lattice 48 ejecta 48 waveguides 48 corona 48 irregularly shaped 48 annular 48 saucer shaped 48 perpendicular 48 symmetries 48 bulbous 48 telescopic 48 dimensional 48 nuclei 48 vortices 48 dynamical 48 elongated 47 molten 47 coronal 47 gaseous 47 funnel shaped 47 neutrons 47 parallax 47 microscopic 47 Z axis 47 prismatic 47 metamaterial 47 cube 47 parabola 47 crystalline structure 47 elliptical galaxies 47 lenticular 47 nebula 47 symmetric 47 proton 47 geometry 47 spiral galaxies 47 holographic 47 calcite 47 electrically conductive 47 particle 47 octagonal 46 nanocrystals 46 inch diameter 46 aperture 46 optical microscope 46 spiral galaxy 46 particles 46 micrometer