意思是一样的，都为 关心或挂念某事，物。但是用法不同。前者的concern做谓语，后者的concerned做表语。请看下面的两句例句：
（1）He concerns about her safety.(concern在这作谓语，由于第三人称，故要加s.)
(2)He is concerned about her safety.(cioccerned在这做表语。）
英语动词名词的区分：
一、所有有容器性质的名词，几乎都可以做动词
1) bag 把…装入袋中 = put ...into a bag
The supermarket clerk bagged the groceries
2) bottle把…装入瓶中 = put ...into a bottle
The wine was bottled near the vineyard.
葡萄酒在葡萄园附近被装瓶封藏。
3) barrel把…装入桶中= put … into a barrel
They planned to barrel the beer next Monday.
他们打算下星期一把啤酒装桶。
4) can把…装罐 =put … into a can
Fruit is often canned in winter.
冬天的时候人们常常把水果装进罐里贮存起来。
5) pocket 把…装入袋内=put … into a pocket
She pocketed her wallet and door keys.
她把钱包和门钥匙放进了口袋里。
5) house 为..提供住所 =put … into a house
We should manage to house and feed the poor.
我们得设法解决贫民的食宿问题。
二、某种特征事物的名词，可以做动词表示这种特征的形成
1)section把…分段切开= make … into sections
搞机械的小伙伴知道线切割(wire EDM)把一个零件沿着横截面（cross section)切开，其实用section就可以表示切开，你用cut也可以，但section听起来专业一点。
section a part.
把零件切成两半。
tri-section a part
把零件切成三半。
2) coat 覆盖…的表面= provide coat for ..
Coat the fish with seasoned flour.
往鱼身上涂调好味道的面粉。
3) slice将…切成薄片= make … into slices
slice potatoes
把土豆切成薄片
4) dice将…切成方块= make … into dices
dice the carrots
把胡萝卜切成小方块
5) skin将…剥皮（还可以strip/peel) = remove the skin of ..
skin a banana
剥去香蕉皮
6) sandwich= 把...做成三明治= make … into a sandwich
sandwich two pieces of bread with some sausage
把香肠夹在两片面包里做成三明治
7) signal 发出...的信号 = send a signal as …
signal a turn 打转向灯
三、其他常用
1) author撰稿= be the author of ...
the article authored by her
她写的文章
2) chair 当...主持人= be the chairman of …
chair the meeting主持会议
3)cloud蒙蔽= make ... as unclear as cloud.
Don't let your pride cloud your judgement.
不要让骄傲蒙蔽你的判断力。
4) inventory 编制...库存清单= make an inventory of ...
inventory all the books before the end of the year
年底之前把所有的书清点一下。
5) pressure 对...施压= give pressure to …
My parents will never pressure me to get married.
我父母从来不给我施压催我结婚。