テン 
ころ.がる ころ.げる ころ.がす ころ.ぶ 
() rotate () turn around
                 
てんてん (adv,adv-to,n,vs) (1) moving from place to place, being passed around repeatedly, (2) rolling about
ころがす (v5s,vt) to roll
ころがる (v5r,vi) (1) to roll, to tumble, (2) to fall over, to roll over, (3) to lie down, (4) to be scattered about, to be common, (5) (of a situation or outcome) to change, to turn out
てんじる (v1,vi) to turn, to shift, to alter, to distract
ころぶ (v5b,vi) to fall down, to fall over
てんい (n,vs,adj-no) (1) moving (with the times), changing (with the times), (2) metastasis, (3) transition (i.e. phase transition), (4) transfer (of learning), (5) transference (in psychoanalysis)
てんか (n,vs) second marriage, remarriage, imputation, blame
てんかん (n,vs,adj-no) convert, divert
てんき (n) turning point
てんきょ (n,vs) moving, changing residence
てんきん (n,vs) job transfer, job relocation, intra-company transfer
てんこう (n,vs) conversion, shift, about-face, switch
てんしゅつ (n,vs) moving-out
てんしょく (n,vs) change of occupation
てんしん (n,vs) (job) turnover
てんせん (n,vs) fighting in numerous battles
てんとう (n,vs,adj-no) (1) falling down, tumbling, overturning, turning over, (2) reversing, inverting, inversion, (3) getting upset
てんにん (n,vs) change of post
てんばい (n,vs) resale
てんぷく (n,vs) (1) capsizing, overturn, turning over, upset, (2) overthrow (e.g. a government)
てんよう (n,vs,adj-no) diversion, putting something to another use
てんらく (n,vs) fall, degradation, slump, spill

Links: KanjiDic: EDict : Wikimedia
Etymologies: 中文字譜 : 説文解字