Kev tuav lub qhov ncauj huv yog qhov tseem ceeb ntawm cov khoom siv kho qhov ncauj. Cov khoom xws li cov tshuaj txhuam hniav, txhuam hniav, thiab cov tshuaj txhuam hniav pab tshem tawm cov khoom khib nyiab thiab cov quav hniav los ntawm cov hniav, txo cov pob zeb, thiab ua kom cov hniav thiab cov pos hniav huv si. Lub caij no, cov khoom lag luam zoo li cov tshuaj ntxuav qhov ncauj thiab cov tshuaj pleev qhov ncauj ua haujlwm pab ntxiv, pab txo qhov ua pa tsis zoo thiab txhim kho kev nplij siab thaum muaj kev sib raug zoo niaj hnub.
Cov khoom kho qhov ncauj kuj muaj kev tiv thaiv thiab kev tiv thaiv. Cov khoom lag luam niaj hnub no feem ntau suav nrog cov haujlwm tshwj xeeb- xws li kev tiv thaiv kab noj hniav, tshem tawm qhov rhiab heev, tiv thaiv cov pos hniav, thiab ua kom dawb huv - kom tau raws li cov kev xav tau ntawm cov neeg siv khoom sib txawv. Kev siv zoo ib yam thiab tsim nyog txhawb kom cov neeg siv khoom them nyiaj ntau dua rau lawv qhov ncauj noj qab haus huv, txhawb kev paub txog kev tiv thaiv, thiab txhawb nqa kev saib xyuas qhov ncauj zoo.
Cov khoom siv kho qhov ncauj kuj pab txhawb kom lub neej zoo dua qub. Kev noj qab haus huv ntawm qhov ncauj tsis tsuas yog cuam tshuam rau kev noj zaub mov xwb tab sis kuj tseem txuas nrog cov duab ntawm tus kheej, tus kheej -kev ntseeg siab, thiab kev noj qab haus huv hauv zej zog-. Raws li kev lag luam hloov zuj zus mus, cov khoom siv kho qhov ncauj tau nce tshwj xeeb, tus kheej, thiab ntse; lawv muab cov neeg siv khoom paub txog kev saib xyuas ntau dua, pab txhawb kev hloov pauv ntawm kev tu yooj yim mus rau qhov ntev - tswj kev noj qab haus huv qhov ncauj.