We love didactic art! Sky blue and gray imprints enlighten you with old-time nicknames and identifying characteristics of those white things overhead.
According to this illustrative chart:
Cirrus = Feather Clouds
Cirro Stratus = Tangled Web Clouds
Cirro Cumulus = Mackerel Clouds
Alto Cumulus = Sheep Clouds
Alto Stratus = Curtain Clouds
