furniture vs baby bed

furniture and baby bed both are nouns.

Word	Noun	Adjective	Verb	Adverb
furniture	Yes	No	No	No
baby bed	Yes	No	No	No

As nouns, baby bed is a hyponym of furniture; that is, baby bed is a word with a more specific, narrower meaning than furniture:

furniture: furnishings that make a room or other area ready for occupancy
baby bed: a small bed for babies; enclosed by sides to prevent the baby from falling

furniture (noun)	baby bed (noun)
furnishings that make a room or other area ready for occupancy	a small bed for babies; enclosed by sides to prevent the baby from falling