I want to know the answer to the following question:
For Sunni Islam, what does the word Imam commonly mean?
All the background I'm provided with is that "However, from the Shia point of view this is merely the basic understanding of the word in the Arabic language and, for its proper religious usage, the word "Imam" is applicable only to those members of the house of Muhammad designated as infallible by the preceding Imam.". Is that enough to answer the question?
Answer: no