cobweb vs filament

cobweb and filament both are nouns.

Word	Noun	Adjective	Verb	Adverb
cobweb	Yes	No	No	No
filament	Yes	No	No	No

As nouns, filament is a hypernym of cobweb; that is, filament is a word with a broader meaning than cobweb:

Other hypernyms of cobweb include fibril, strand.

cobweb (noun)	filament (noun)
a dense elaborate spider web that is more efficient than the orb web	a thin wire (usually tungsten) that is heated white hot by the passage of an electric current
filaments from a web that was spun by a spider	a threadlike structure (as a chainlike series of cells)
a fabric so delicate and transparent as to resemble a web of a spider	the stalk of a stamen
	a very slender natural or synthetic fiber