Combining two strings is called

The appropriate response is "Concatenation". A further explanation is given below.

Explanation:

Two or much more strings are almost always concatenated besides space-saving purposes, and therefore could be acknowledged as either a single product. A straightforward example that demonstrates concatenation should be to figure out what it means. How and why that ends up making a term separate from several other phrases is that almost all the messages are stacked together without any open space between each one.

my day was okay, a little bit boring. how was yours?