What to fill a big concrete gap?

Hi, I have a problem on my front porch wall. Its front is ceramic tiles, and its side is concrete wall. (see photo attached). There is a big gap between the back of the ceramic tiles and the concrete wall, which I would like to fill and smooth it. I don't know what kind of material can do this job, concrete? mortar mix? or some other material that can fill and stay on this wall tight and firm?

Appreciate any expert could give me some advice. Thank you.

 

Take a pic from slightly further back. It's hard tell what we are looking at.
If it is what I think it is then mortar mix is probably the best material.

 

OK, looks like somebody just did not know how to finish your wall. Here is a video on using Sakcrete. These principles can be used in filling and finishing your cracked area.

[ame]https://www.youtube.com/watch?v=d9LHZu1dXok[/ame]

HAVE FUN!

 

Here is another photo took from a distance.

 

:help:

I think my last submission didn't attached the photo, here it is.

 

I don't know why I tried two times to submit a photo and it failed. Here I tried again and hope it works.

View attachment Wall crack 222.bmp