架 （カ） rack, mount, stand

架空 （カクウ） fictitious, imaginary, fanciful, fabricated, aerial, overhead

高架 （コウカ） elevated (structure), overhead

担架 （タンカ） stretcher, litter (medical), gurney

架ける （かける） to suspend between two points, to build (a bridge, etc.), to put up on something (e.g. legs up on table)

架かる （かかる） to span, to bridge, to cross, to straddle