there is no difference between instance and example. instance is more formal when speaking, and example is more common to use there is no difference between cease and stop. stop is much more common, cease is very formal to use - you usually only see the word cease in an essay or a book because it is very formal. An ingredient is something that goes in a recipe. If I am making pancakes, the ingredients are: eggs, flour, and milk. A constituent means a part of something. However, in english in reality we only use it to mean a person who is part of the public, usually when speaking about politics. For example, "she is the senator of New York, therefore her constituents are all people living in New York". Or "I am the president of this University, therefore all the students at this University are my constituents" The main difference is that ingredients are things (almost always food items), and constituents are people.

Instance is noun A Step stage or situation viewed as part of a process or series of events. Example is noun One that serves as a pattern to be imitated Cease is verb To case to come to an end specially gradually : no longer continue Stop is verb To close my filling or obstructing Constituent is noun A member of a constituency Ingredient is noun Something that enters into a compound or is component part of any combination or mixture : constituent