cabalgar  to ride (a horse)

caber  to fit

calcular  to calculate

caer  to fall

calentar  to warm/heat

callar  to keep quiet/shut up

cambiar  to change

caminar  to walk

cansarse  to get tired

cantar  to sing

capturar  to capture

carecer  to lack

casarse  to get married

castigar  to punish

cavar  to dig

cazar  to hunt

celebrar  to celebrate

cenar  to have dinner

cepillar  to brush

cerciorarse  to make sure/verify

cerrar  to close

chantajear  to blackmail

charlar  to chat

chocar  to crash/hit

chupar  to suck

clavar  to nail

cobrar  to charge/collect

cocinar  to cook

cojear  to limp

colaborar  to collaborate

colgar  to hang

colocar  to put/to place

colorear  to color

combinar  to combine/mix

comentar  to comment

comenzar  to begin/start

comer  to eat

comercializar  to commercialize/market

comerse  to eat up/use up

cometer  to commit

comparar  to compare

compartir  to share

competir  to compete

complicar  to complicate

comportar  to behave

comprar  to buy

comprender  to understand

comprobar  to check/to verify

comunicar  to communicate

concentrar  to concentrate/focus

conducir  to drive

confundir  to confuse

conjugar  to conjugate

coger  to take/pick up

concluir  to build

conocer  to know/meet

conquistar  to to conquer

conseguir  to get

consentir  to allow/pamper

conservar  to maintain/preserve

considerar  to consider

consistir  to consist of

construir  to build

consumir  to consume

contactar  to contact

contagiar  to infect/spread

contaminar  (to pollute/contaminate)

contar  (to count/tell)

contener  (to contain)

contestar  (to answer)

continuar  (to continue)

contratar  (to contract/hire)

contribuir  (to contribute)

controlar  (to control/check)

convencer  (to convince)

convertir  (to turn into)

convivir  (to live together)

cooperar  (to cooperate)

copiar  (to copy)

coquetear  (to flirt)

corregir  (to correct)

correr  (to run)

corresponder  (to correspond)

cortar  (to cut)

coser  (to sew)

costar  (to cost)

crear  (to make/create)

crecer  (to grow)

creer  (to believe)

criar  (to raise/breed/bring up)

criticar  (to criticize)

cruzar  (to cross)

cubrir  (to cover)

cuidar  (to look after/care)

cuidarse  (to take care (of oneself))

culpar  (to blame)

cumplir  (to carry out/fulfil)

curar  (to cure)