why is the word bookend a synonym for a frame

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
why is the word bookend a synonym for a frame	0.77	0.3	324	87	45
why	1.25	1	6554	57	3
is	1.53	0.3	7706	41	2
the	0.22	0.6	9155	87	3
word	0.68	1	7088	49	4
bookend	0.92	0.5	6174	6	7
a	0.46	0.3	8095	2	1
synonym	0.74	0.5	4700	19	7
for	1.1	0.5	6449	74	3
a	1.03	0.4	7574	79	1
frame	0.15	0.4	2925	42	5

Keyword	CPC	PCC	Volume	Score
what is a frame on a book	1.11	0.9	4515	79
another word for bookend	1.89	0.7	6785	99
what is a bookend in writing	0.39	0.8	9785	58
what is a bookend	1.06	0.7	2566	88
how to make a bookend	0.19	0.6	3322	15
bookend or book end	0.52	0.5	4696	78
what does bookends mean in jargon	1.36	0.6	2949	69
another word for booked	2	0.2	5175	15
another name for bookends	0.43	0.5	8748	13
cheap bookends for sale	1.86	0.5	4594	28
another word for book	0.05	0.3	8888	9
booked synonyms in english	1.24	0.9	6077	68
what does bookended mean	1.86	0.2	635	92
what is the best type of bookend	0.91	0.1	9047	60
bookends for small books	1.62	0.1	1301	98
affordable bookends for sale	2	0.8	7873	55
bookends for sale amazon	0.43	1	6723	23
book synonyms in english	0.54	0.2	2218	20
bookends where to buy	0.74	0.1	9466	1
cheap bookends near me	1.72	0.4	4279	45
bookcase bed frame	0.35	0.6	1233	68
bookshelf bed frame	1.88	0.8	3745	13
comic book frame	0.87	0.7	4760	93
a frame bookshelf	1.51	0.6	8357	65
full size bed frame with bookshelf headboard	0.13	0.6	101	86
wedding guest book frame	1.65	0.8	5565	41
frames on books on shelves	0.24	0.8	4758	33