Pleas help pleas. . It is language arts

What are some words that start with dict-say ( i can only think of dictator) ; ( so much pls respond.

What is a ridge of rock near the water's edge

Ireally, really need with this asap. i don't understand spanish prepositions and when they should be used. the questions are:fiesta con juan el fin de semana pasado. el parque está casa. es una lástima que haya tantos lago. el jefe quiere inmediatamente. the answers can be one of the following: en, con, de, a i will award !