Both can be verb, but there are differences: 帮忙: is a typical example of verb phrase which is: verb.+noun. (帮v.+忙n.) These kind of verb phrases can't be followed by noun. or pronoun. and you can modify the noun in these phrases. Eg: 你帮我一个忙,好吗?( you can't say: 你帮忙我一个) similar phrases: 上课v.+n. （上中文课，上三次课。。。），做饭v.+n.（做中国饭，做一家三口的饭。。。） 帮助: is verb phrase composed by v.+v. so it's same with normal verb. because 帮and助 are same meaning, so sometimes can just use 帮 Eg：你帮(助)我一下,好吗？ Both of them also can be noun. they are the same meaning and function. 帮助is little bit formal. Eg: 他给了我很大帮助。 谢谢你的帮忙。（谢谢你的帮助。little bit formal) Hope these explain help you:) (希望对你有帮助）

帮助，不管在什么情况下都必须作为一个完整的词来用，我们把这种词叫做“一般性动词”。 帮助，we have to use it as a whole word,like "帮助。。。"，you cant say "帮。。。助"for example,我曾经帮助过他i helped him before. 帮忙，可以合起来用，也可以分开用，我们把这种词叫做“离合词”。 帮忙，you can use it as a whole word,or separate it, for example,看到朋友困难，我当然应该帮忙。of course i should help them if i see they are in trouble 帮他的忙help him=帮助他

just like Verb. Vi and Vt。帮助 Vt. 帮忙Vi

1.帮忙+做某事 帮(某人)忙 2.帮助+某人+做某事 ..对...有帮助 两者都可以做名词

幫忙 is more like a noun; 幫助 is verb. ex: 1.謝謝您的幫忙(thank you for your help.) 2.讓我幫助您(let me help you.) 不知道這樣你能不能了解呢?