Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
空く あく to become vacantgodan, jlpt3, jlpt5, leda1, verb, vintrans
そら skyjlpt5, leda1, shizen
空手 からて karatesport
handhito, jlpt5
空っぽ からっぽ prázdnýleda1
手がかり てがかり (1)clue, key, trail, scent, track, contact, (2)handhold, on hand mix
手にする てにする (1)to hold (in one's hand), to take (into one's hand), (2)to own, to obtain suru
空ける あける vyprázdnit (láhev)ichidan, jlpt3, leda1, verb, vtrans
おなじ; おなじく; くりかえし; どうのじてん; のま množné číslo (sometimes voiced); repetition of kanji (sometimes voiced); repetition of kanji (sometimes voiced); repetition of kanji (sometimes voiced); repetition of kanji (jen výjmečně)
手のひら てのひら palmhito