Breaking down meaning of 几句话 I came across this sentence:

我想对你说几句话。
Wǒ xiǎng duì nǐ shuō jǐ jù huà.
I'd like to say a few words to you.


My understanding is that 句 means sentence, and 话 means "words" in general (ie 我听不懂她说的话 or "I don't understand the words he is saying"). But if you want to say "a few words" why not just say 几句 instead of 几句话? I don't see the function of the 话 at the end.
Pedroski wrote in his answer:


  After enumeration, such as '几‘， any word you can't explain will be a classifier.


Agree with that.  "句" in "我想对你说几句话" is not a noun but a classifier

If you say 我想对你说几句, you  just omitted the object "话" but it is still implied. Similar to saying "may I have a few?" in English, which an object is implied,

For example, a man is eating candy, his friend pointing at the candy and ask: "May I have a few?" he doesn't need to state the object "candy" which is understood by both parties 

With the same logic, the object in 我想对你说几句 is made understood with the present of the verb "说" (say). The object of the verb "说" (say) is always "话" (e.g. 真心话, 不中聽的话, 重要的话 etc.)

Example of "句" as a noun: 


with classifier: 一個句 (a sentence), 個 is a legit classifier for 句(n)
with applicable verb: 造句 (make a sentence), 造 is a verb applicable to 句(n)
with applicable adjective: 疑問句 (interrogative)


疑問句 (interrogative) is a single term, but 疑問 functions as an adjective and 句 functions as a noun within the term