equal to
Worry, anxiety, or unease.
A synonym for demonstration is "exhibition." Other options include "presentation" or "showcase," depending on the context in which the term is used.
"Farewell" is a synoymn for "good-bye." I'm not sure about the "love" part . . . Maybe farewell, my love.
A synonym for the word "afford" is "manage," particularly in the context of having the means or ability to do something. Other synonyms include "provide," "supply," and "allow," depending on the context in which it is used.