About,above,abroad,aboard,ache,achieve,acid, acknowledge......A letter words 2

Aboard- on to a ship, plane, or a train

Are all passengers aboard the ship

About-on the subject of, concerning

A little more or less than,

Above-in or to a higher place

              More than

Abroad- in or to another country

Ache- to hurt,to give pain

Achieve-to do or finish something after well trying, to get 

Acid-(in chemistry) An acid is a molecule or ion capable of either donating a proton,  capable of forming a covalent bond with an electron pair.

Acknowledge- to agree, to get to know something

Acne-a skin problem