senile - Used to describe behavior, mental states, or conditions associated with aging, especially when a person becomes forgetful or confused.

The elderly man showed symptoms of becoming senile, like forgetting where he put his keys, but with support, he managed to live independently for a while.
reconcile - To bring two or more people or groups into a state of harmony or understanding after a disagreement or conflict.

After a long argument, they managed to reconcile their differences and rebuild their relationship, realizing how much they valued each other.