and thanksgiving with a lower case "t"? Yes, there is.
Thanksgiving is a noun and is the name for the holiday
we celebrate in November.
As a verb, thanksgiving is "the act of giving thanks."
The holiday is celebrated for one day once a year, but everyday should be a day of giving thanks for all the blessings the Lord has given us.
Here are some pics I created illustrating both.
May you celebrate this year
with both--
Thanksgiving and thanksgiving.