c emplace_back vs push

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
c emplace_back vs push_back	0.64	0.1	9537	6	29
c	1.98	0.3	4696	88	3
emplace_back	1.42	0.1	6531	23	12
vs	1.62	0.6	9081	47	2
push_back	1.38	0.2	5741	59	9

Keyword	CPC	PCC	Volume	Score
emplace_back vs push_back move	0.59	0.4	2321	6
push_back vs emplace_back in c++	0.22	0.5	4745	97
emplace_back vs push_back performance	1.76	0.7	8948	30
difference between emplace_back and push_back	1.94	0.6	107	56
use emplace_back instead of push_back	1.39	0.5	1127	55
emplace push_back	1.89	0.6	3260	78
emplace_back pushback	0.47	0.5	8221	78
emplace back vs push back c++	0.12	0.8	4434	87
c++ vector push back vs emplace back	1.55	0.4	1316	38
c++ vector push_back vs emplace_back	0.37	0.5	7295	47
push_back vs emplace_back	1.39	0.3	1792	43
c++ list emplace_back push_back	1.28	0.6	2471	31
push_back and emplace_back	1.86	0.4	7639	41
emplace_back vs push_back c++	1.45	0.9	2321	67
vector push_back vs emplace_back	0.81	0.2	2767	1
push_back emplace	1.68	0.2	7387	63
why is emplace_back faster than push_back	1.77	0.9	4305	96