Continuing with my objective of offering simple definitions, it seems to me that religion is essentially about explaining those things that science and engineering cannot explain, that is primarily the non-physical, spiritual, ethical, moral and related realms.
Searches on Google return the following numbers: religion (31,500,000), worship (8,980,000), praise (has connotations other than religion) (6,440,000). It seems to me that a broad concept of religion is a significant part of the thinking of many people.
As a "religious" person, i hold that my religion offers an explanation for the existence of the universe, the existence of the earth and the existence of all that is on the earth with particular emphasis on an explanation for the existence of humankind. Why humankind is here, where humankind came from and where humankind is going.
Given what i have written above about science and engineering it seems to me that the "theory of evolution" or any other theory about where humankind came from cannot be verified by standards that i personally hold to be "scientific" nor can i find a way to verify it by methods that i hold to conform to "engineering" disciplines.
This leaves me to conclude that the theory of evolution is just as much a religion as belief in a creator is a religion.
It seems to me that the word "faith" could be substituted for "religion" and lead to the same conclusion.
Personally, i keep coming back to "creation" being faith in a creator whose origin cannot be explained and "evolution" is faith in a creative event that brought uncountable billions of tons of physical matter into existence whose origin cannot be explained. I think it requires less faith to believe in a creator than it takes to believe in something that i experience as "we will figure it out some day".
I cannot prove this and leave it for your consideration.