The "a" in "art" and the "a" in "March" sound the same.
The second "a" in "lava" and the first "a" in "massage" are a schwa.
The schwa sounds like an "aw."
The schwa is a long and relaxed vowel sound.
The third "a" in "faraway" sounds like the "a" in mate.
The "a" in "apple" sounds the same as the "a" in "awesome."
The "a" in "father" sounds like the "o" in "hot."
The "a" in "awesome" sounds like the "a" in "law."
The "a" in "avoid" is a schwa.
The "a" in "art" and the "a" in "install" have an "aw" sound.