contact和contact with有什么区别?

contact with 与…联系
该词组中的contact常作为名词
例句：
They are trying to make contact with the kidnappers.
他们正设法与绑架者接触.
It's a pity to lose contact with old schoolfriends.
跟老同学失去联系是件遗憾的事.
We keep in contact with our office in New York.
我们与纽约的办事处保持联系.
contact作为及物动词的时候也是 （与……）联系；联络
例如：
Is there a phone number where I can contact you?
能不能给我一个电话号码,以便同你联络?
contact
名词 n.
1.接触,触碰[U][(+with)]
2.交往;联系,联络[U][(+with)]
He tried in vain to get into contact with the local branch.
他试图与当地分部取得联络,但没有成功.
I finally made contact with her in Paris.
我终於在巴黎同她取得了联系.
3.熟人,门路[C]
He made contacts with wealthy people in raising money for the project.
为该项工程筹款他与许多有钱人拉关系.
I have a useful contact in New York.
我在纽约有个有用的人可以联系.
4.【电】接点,触点;接触器[C]
The switches close the contacts and complete the circuit.
这些开关可使接触器接通电流形成回路.
5.【医】刚接触传染病而有带菌嫌疑者
6.隐形眼镜
形容词 a.
1.接触的
2.接触传染的
The little boy was kept home from going school because of his contact skin rash.
那个小男孩不上学待在家,因为他患有接触传染的皮肤病.
及物动词 vt.
1.与...接触;与...联系
I will contact him by telephone.
我将打电话和他联系.
不及物动词 vi.
1.接触;联系
貌似很少见contact以不及物动词的形式出现,我的词典【牛津中阶英汉双解词典】里也是只标注了【T】 （及物动词）