As you know, the verb "assemble" means: "to make something by joining separate parts together"; also the phrasal verb "put together" means: "to put the parts of something in the correct places and join them to each other".
I need to know if they both can work in the same sense in the following sentence or not:
- He helped his son to ............. his new model airplane.
a) put together
I think both of the options "a" and "b" work naturally in the sentence above without any change in meaning.