The other two answers are great, I'll just add a two pictures as well as one synonym.
K-fold cross-validation (kFCV):
Monte Carlo cross-validation (MCCV) = Repeated random sub-sampling validation (RRSSV):
References:
The pictures come from (1) (pages 64 and 65pages 64 and 65), and the synonym is mentioned in (1) and (2).
(1) Remesan, Renji, and Jimson Mathew. Hydrological Data Driven Modelling: A Case Study Approach. Vol. 1. Springer, 2014.
(2) Dubitzky, Werner, Martin Granzow, and Daniel P. Berrar, eds. Fundamentals of data mining in genomics and proteomics. Springer Science & Business Media, 2007.