yh It does, my chem A-level coursework was on this
methanoic acid only has one central carbon which has a double bonded Oxygen, and an OH attached which makes up the COOH carboxylic acid group
but if you consider the second hydrogen attached and the double bonded Oxygen that's considered an aldehyde group and can be further oxidised
which means you can distinguish between it and ethanoic
EDIT: That was a reply to a post that someone has just deleted