In general, roses are either once-blooming (nonremontant) or repeat-blooming (remontant). Once-blooming roses have a 3-6 week bloom period in spring or summer. Repeat-blooming roses bloom in spring, and then have another bloom in autumn. Continuous-blooming roses repeat flushes every 6-8 weeks from spring through autumn. Everblooming have some blooms nearly constantly from spring through autumn. However, these terms are used very loosely, and the frequency of rebloom varies with growing conditions.
As far as I can remember, the difference is related to the time when these plants bloom. For example, continuous-flowering roses will bloom once in the late spring, while repeat blooming roses will bloom until the frost. Still, if you want to speed up the growth of your roses, you can use different seeds available on the internet. Visit https://www.growgardener.com/the-5-best-kentucky-bluegrass-seeds-for-your-lawn/; here, you can buy seeds and weed fertilizers.