In the case of a self-titled album, such as Buddy Holly's Buddy Holly, it is called eponymous.In the case of a a word that has no lexical connection to anything else, like if you discovered something brand new and you immediately though thystusamusto (I hope that's not a real word), it is called a neologism.
That would an ambigram. That is, if your question meant to say "reads as one word one way, and says something else upside-down."
if your using something like "if an," or something else.
A stimulus is an event or action that makes something else happen. Other possible answers are trigger or impetus.
The four letter word for repairing something is mend.
If something pertains to something else, it is related or has to do with something else.
people hazard is where they do something wrong and affects someone else
detached.
Something is imbedded in something else when it is stuck into it.
exchange something for something else in other word's trade.
Buy is a word to obtain something but by giving something else. Purchase can be the similar word for buy.
complete and something else.
exchange something for something else in other word's trade.
It means to replace something, with something else that is equivalent.
The word is actually "misCible" meaning something that can be mixed with something else.
Alternate. substitute (verb)
Symbol, metaphor, simile.