惚け[boke] idiot
一目惚れ[hitomebore] to be taken with someone at first sight (similar to "love at first sight", but not as strong)
惚ける[houkeru] to grow senile
惚れる[horeru] to fall in love
惚れ惚れ[horebore] fondly

惚れ込む[horekomu] to be charmed by
惚気る[norokeru] to play up
時差惚け[jisaboke] jet-lag
自惚[unubore] pretension
自惚れる[unuboreru] to be conceited

空オケ[karaoke] karaoke (singing to taped accompaniment)
ベクトル空間[bekutorukuukan] vector space
茜さす空[akanesasusora] glowing sky
圧搾空気[assakukuuki] compressed air
圧縮空気[asshukukuuki] compressed air

位相空間[isoukuukan] phase space (physics)
宇宙空間[uchuukuukan] outer space
雨空[amazora] rainy sky
英国航空[eikokukoukuu] British Airways
仮想空間[kasoukuukan] virtual space (e.g. in computer graphics)