Is grammar the same as syntax?

Answer 1

Syntax has to do with the structure of sentences such as the order of the words and the placement of phrases and punctuation. This involves nouns, verbs, etc. Grammar has to do with the rules of of these placements and includes syntax.

Answer 2

Grammar and syntax are not the same. Grammar refers to a set of linguistic elements and rules; syntax, meanwhile, refers specifically to the study of how linguistic expressions can combine to form larger expressions (a study of phrasal/sentence structure). Syntactical rules are a subcategory of a language's grammar.