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Mass wasting: http://web.csulb.edu/depts/geology/facultypages/bperry/Mass%20Wasting/Introduction_to_Mass_Wasting.htm
Glaciers: http://donlehmanjr.com/Mountain/08%20The%20Dynamics%20of%20Glaciers.htm
Caverns/caves: https://en.wikipedia.org/wiki/Cave
Sinkholes: http://www.independent.co.uk/news/science/sinkholes-what-are-they-how-do-they-form-and-why-are-we-seeing-so-many-9136235.html
Ox-bow lake: https://en.wikipedia.org/wiki/Oxbow_lake
Meandering lake: https://en.wikipedia.org/wiki/Meander
V-shaped valley: https://en.wikipedia.org/wiki/Valley
Talus slope: https://www.britannica.com/science/talus-landform
Natural arch: https://en.wikipedia.org/wiki/Natural_arch
Pinnacles: https://www.nps.gov/pinn/learn/nature/geologicformations.htm
Hoodoo: https://www.nps.gov/brca/learn/nature/hoodoos.htm
Sand dunes: http://www.geography-site.co.uk/pages/physical/coastal/dunes.html

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Creeps: small movements in soil over time downslope due to gravity
Landslides: little or no flowage of materials until heavy rain hits it
Flows: fluid like movement of soil
Slump: slipping of coherent rock along a curved surface of a decline
Falls: regolith cascades down a slope, but cannot be classified as a flow

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Moraines: deposited material is exposed after the glacier retreats
U shaped valleys: u shaped valleys start as v shaped valleys, and are widened out by the glacier
Cirque: bowl shaped places where ice begins to collect
Arête: two cirques that form back to back and erode the back walls

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Stalactites: limestone rich water drips from pores in the ceiling of the cave/cavern
Stagmites: similar to stalactites, except they form at the bottom of a cave

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Groundwater erodes bedrock layers, such as limestone

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When a meander from the main stem of the river is cut off

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the stream erodes the outer banks, and widens its valley

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V-shaped valleys have water running through them, and depend on the characteristics of the stream flowing through it

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They form when debris piles up to form an angle of repose

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Deep cracks in a sandstone layer are eroded, exposing the cracks

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they are made up of seashells that were broken down to limestone, and washed ashore, and then blown to create dunes

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For example, at Bryce Canyon, frost wedging forms Hoodoos, by the water expanding inside the rock

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sand dunes form when wind blows sand into a sheltered area behind an obstacle, such as a large rock