Table 6.

Top 30 keywords for the year 2020 by extraction method and sample size

SketchEngine				TextRank
0.1% Sample		1% Sample		0.1% Sample		1% Sample
Keyword	Score	Keyword	Score	Keyword	Score	Keyword	Score
coronavirus	49.32	coronavirus	47.83	coronavirus	0.75	coronavirus	0.74
covid	48.11	covid	43.75	pandemic	0.63	pandemic	0.64
covid-19	31.27	covid-19	31.40	covid	0.61	people	0.57
pandemic	31.12	pandemic	30.23	people	0.57	covid	0.55
lockdown	17.60	lockdown	18.54	covid19	0.52	covid19	0.55
virus	14.90	virus	15.16	cases	0.50	lockdowns	0.52
trump	14.12	corona	12.50	covid-19	0.47	cases	0.50
corona	11.74	trump	12.40	u.s.	0.46	case	0.48
china	11.03	ðÿ	11.33	lockdown	0.45	virus	0.46
mask	9.73	china	11.29	deaths	0.44	lockdown	0.46
deaths	9.64	mask	9.45	lockdowns	0.44	u.s.	0.46
outbreak	9.27	deaths	9.40	death	0.42	covid-19	0.45
cases	9.03	outbreak	9.28	virus	0.41	death	0.45
wuhan	9.02	cases	8.92	china	0.41	days	0.44
distancing	8.15	wuhan	8.79	masks	0.41	deaths	0.44
vaccine	7.40	distancing	8.27	lives	0.38	china	0.43
ðÿ	7.39	vaccine	7.18	trump	0.38	masks	0.43
masks	7.29	masks	7.16	home	0.37	times	0.41
covid19	6.32	covid19	5.87	case	0.37	years	0.40
wear	5.81	wear	5.63	life	0.37	health	0.40
cdc	5.69	spread	5.59	days	0.36	home	0.38
spread	5.67	cdc	5.57	health	0.36	countries	0.38
tested	5.12	stay	5.15	states	0.34	weeks	0.38
americans	5.01	novel	5.01	years	0.34	mask	0.37
stay	4.97	tested	4.71	mask	0.33	life	0.37
positive	4.64	flu	4.54	weeks	0.33	lives	0.37
chinese	4.47	chinese	4.46	patients	0.33	states	0.36
breaking	4.46	positive	4.46	government	0.32	trump	0.36
infected	4.39	infected	4.44	hospitals	0.31	government	0.35
flu	4.35	americans	4.35	corona	0.31	state	0.35