focus

[1]	concentrate , centre , converge , meet , pinpoint , spotlight , bring into focus , (Colloq) zero in
[2]	concentrate , center , centre , pore , rivet
[3]	concenter , concentre , focalize , focalise
[4]	focalize , focalise
[5]	focalize , focalise , sharpen

[1]	focusing , centre , concentration , focussing , focal point , focal point , heart , direction , centering , core , target , convergence , hub , nave , cynosure
[2]	in focus , clear , distinct , well-/sharply defined
[3]	out of focus , unclear , indistinct , blurred , blurry , fuzzy , woolly
[4]	focal point , nidus
[5]	stress
[6]	focal point