Explanation:

- Sodium stearate: This is one of the most common soaps used in solid soap bars. It's formed from stearic acid and is a type of fatty acid salt.

- Sodium palmate: A soap derived from palm oil. It is created when palm oil is saponified with sodium hydroxide.

- Sodium benzoate: [] This is a preservative, not a soap. It's used widely in the food industry to prevent microbial growth.

- Sodium oleate: This is another soap component derived from oleic acid, often used in soft soaps.