I have to use propose to answer this question. Change one letter to make another word for market or store.

To find a word that is related to "market" or "store" and is formed by changing just one letter, we can use the "propose" method.

Start with the word "market" and analyze each letter individually, starting from the first letter. Replace one letter at a time with another letter until a new word is formed.

For example, if we change the first letter "m" to "s," we get the word "sparket." However, this word is unlikely to be found in the dictionary and does not retain the same meaning as "market" or "store."

Let's try changing the second letter "a" to "o." This gives us the word "morket," which is not a recognized English word either.

Continuing with the third letter "r," if we change it to "s," we form the word "masket." However, this word also does not have a common meaning related to "market" or "store."

Finally, if we change the fourth letter "k" to "s," we get the word "marset." Unfortunately, "marset" is not a recognized word either.

Considering these options, it appears that changing just one letter in "market" does not create a word that has the same meaning as "market" or "store." It is important to note that this exercise may not always yield a valid English word, as words formed by changing a single letter may not have commonly recognized meanings.