molding vs astragal

molding and astragal both are nouns.

Word	Noun	Adjective	Verb	Adverb
molding	Yes	No	No	No
astragal	Yes	No	No	No

As nouns, astragal is a hyponym of molding; that is, astragal is a word with a more specific, narrower meaning than molding:

molding (noun)	astragal (noun)
a preliminary sculpture in wax or clay from which a finished work can be copied	a beaded molding for edging or decorating furniture
the act of creating something by casting it in a mold	the bone in the ankle that articulates with the leg bones to form the ankle joint
a decorative recessed or relieved surface on an edge
a decorative strip used for ornamentation or finishing
sculpture produced by molding