What does “faces like the side of a mountain and wonderful voices like syrup being poured” mean in the passage (paragraph 16)? in the moustache common lit

In this paragraph the speaker describes his grandmother's look, who is living in a nursing home. He compares her with Ethel Barrymore and says they both have "faces like the side of a mountain and wonderful voices like syrup being poured". He means they both have rough-textured skins, like most elder people, and that they have soft silky voices.

two factors or characteristics of a chapter that might make it difficult to read would be words i don't understand, or if i don't fully understand what's going on in the chapter. strategies i can use to get through the difficult material would be a dictionary, and re-reading previous chapters to get a better grasp of what the author is trying to say.