Each word always begins with the letters RI. The two part question has two different sets of clues. Now, what is that word you're looking for?
-1.RI + Chemical element symbol for Iron = Not uncommon; abundant. 4 letters
-2.RI + Hair care product = A binary star in the constellation of Orion. 5
3.RI + A depression or damage to the surface = Laughing or giggling. 6
-4.RI + A painful disease affecting the joints of the hands and feet; more common in men = One's dress or outfit. 6
-5.RI + Compound for animals = To mellow with age. 5
-6.RI + Light blue = Involving a slight degree of danger. 5
-7.RI + Informal name for a animal doctor = A type of stud used in metalwork. 5
-8.RI + Without hair on the head = Rude and offensive language. 6
-9.RI + The chime of a bell; noise = Travelling by bicycle. 6
-10.RI + Melody of words from your mouth with or without music = Going upwards. 6