Hi Lalala! I think you mean 'derive from', right? To 'derive from' has 2 meanings. In physical chemistry, 1 material can be derived from another. For example, gelatin is 'derived from' cow bones. The meaning is that if you process 1 material, it can give you another; a 'derivative'. The second meaning is for when we talk about ideas. Here 'derive from' means 'taken from' or 'influenced by'. For example, you could say a design for a dress was derived from the experiences of the designer. 'Obtain from' is more literal, and it means 'to take something from'. For example, I could obtain some products from a company (by buying them). So let's summarise: 'Derive from' + 'obtain from' mean the same thing in terms of physical chemistry. 'Derive from' also has a meaning to talk about ideas. 'Obtain from' does not.

derive synonyms words are to obtain, get, gain, acquire .....

Derive means “ it originally comes from something, to originate from.” Obtain means to get something or to have something in your possession.